Hey, guys. Let's tackle Movie Starscream (not to be confused AT ALL with G1 Starscream, or any other more traditional version of the character). To start, draw a large, rounded triangle upside-down. That'll serve as Screamer's torso. From there, draw a small circle for the head, and some zig-zaggy lines to indicate the arms and legs. Movie Starscream's legs are very bird-like, so you need to throw that extra joint in there.
Lighten your under-drawing. I decided to start detailing the head first, so begin by wrapping a V-shape from the forehead to the top of the head. Draw a small shape for the chin and a "fang" on either side.
Use curves to define the "cheekbones" and the outer ridge of the eye sockets. Next, draw the actual eye sockets, and add some details to the mouth area.
Fleshing out the face, draw a pair of spikes pointing outward from the center of the head. These mark the back of the jaw.
Draw a UFO saucer-shape for the lower half of Starscream's helmet. Complete the top of the head with a couple of curves.
Moving on to the torso, we're kind of drawing a jack-o-lantern face, here (two eyes, a nose, and a pair of teeth). I've simplified the armor panel shapes for this tutorial image, so there are a lot of round shapes and curves. The shapes in this step will become the chest panels, jet cockpit, and... a pair of teeth. Honestly, I never understood that design choice, but somebody got paid to draw it at some point.
Keeping with the "jack-o-lantern" theme, draw in the "eyebrows" and "cheekbones" to that face. Starscream has a very odd structure. These diagonal bars are, perhaps the closest thing he has to ribs.
Attack two rectangular flaps to the tops of the previously-mentioned bars. These are part of the wings from Screamer's jet mode. draw a rounded diamond shape layered beneath the previous shape. From there, complete the shape of the neck/trapezius with a curve. Repeat this on both sides.
I added some cone shapes to indicate the rockets on his back and bulk out the neck area, but that detail is a bit inaccurate. Leaving it out won't make much of a difference. Draw a wave shape pointing outward from each cone. Then draw a rectangular wing panel jutting out from each shoulder.
Bulk out the rib area and close in the sides and crotch. This completes the bulk of the torso.
Movie Starscream has a bizarre collection of toes on each foot that point in odd directions. On the extended leg, the foot will be facing toward us. Draw two claws for the functional toes, and another two toes sticking upward and outward. Think of a split X-shape... or a butterfly torn in half! Poor butterfly... *ahem* On the other foot, draw a pair of circles for the ankle and ball of the foot. Then draw the downward and upward toes pointing out to the side of the image.
On the forward-view foot, use an X-shape to draw the area where the toes connect to the foot. On the sideways-view foot, draw another pair of toes to complete the front of the foot. I got a little carried away and added some extra "toes" sticking upward. Use a claw shape for the heel.
Draw a hexagon (six-sided shape) for the back of each hand. Then layer another hexagonal shape beneath each hand to create the knuckle ridge.
CLAWS! Draw three fingers protruding from the knuckle ridge, and draw a thumb claw on each side of the hand.
Drawing the armor panels for the upper arms and thighs...
Use long, diamond-like shapes to armor the forearms. Draw in the kneecaps, and layer some geometric shapes to armor the shins.
Use lots of angles and blocky shapes to indicate the highly-detailed machinery that connects each large body part to one another. Do this for each joint.
Use small details to bulk out the arms. Draw the calves or middle section of each leg with curves, and detail them with angular shapes.
The following stages are somewhat optional. If you don't want to spend a great deal of time drawing tiny details, feel free to fill in the areas between armor panels with black. For a more authentic movie feel, start etching in all those little lines. Use a smaller brush size for these lines. If you're using pencil and paper, try to use a mechanical pencil. Try to keep a variety of pencils and lead sizes around (0.5mm is standard, but it's good to have 0.7mm and 0.3mm as well. 0.3 would be good for these details).
Using an even smaller brush size, draw the panel lines on the arms. I think I've gone from brush size 5 to 3 and now 2. For pencil. 0.3mm will still do fine. Just use less pressure for a lighter/thinner line.
Panel lines for the legs and feet. This is where the shapes really start to look three-dimensional. Notice the triangular shape at the top of some of the toes. Imagine this as a flat shape. Drawing a line downward creates two more sides to that shape, like a distorted box. Then split the line into another triangular shape to finish off the toe. These are complex shapes in "real life," but it doesn't take much to indicate that shape on paper.
Panel lines for the torso. I'm not sure if the jet this design is based on actually has all those zig-zag lines or not, but Movie Starscream certainly has them. This guy is chock full of detail.
This is where I wished I'd used a smaller line for the head and face in the beginning. If you used think lines, just zoom in and trim them down with the eraser. I used the smallest brush size possible to draw the details of the face. This version of Starscream has a bizarre beak-like mouth. He really does look like some sort of twisted, frumpy bird thing. Oh well. Draw the fins on top of his head and drop a couple of circles down for the pupils. There's actually a ton of detail in the eye area on the movie robot design, but I eliminated that here for the sake of simplicity. Even with all this detail, this drawing is far less intricate than the CGI model for Starscream. Toss in a few details as desired, and you're done! Color, of course, is optional. Doesn't look too shabby in black and white, though. I thought about adding his Cybertronian tattoos from Revenge of the Fallen, but I decided it would cover up too much detail. In any case, I hope you enjoyed this tutorial. Have fun, and be sure to post your drawing results. :D