Step 20: For a cleaner look, erase as much as you can of the initial guide lines. Don't worry about erasing all of the guides. It's okay to leave some behind. Re-draw any final sketch lines you may have accidentally erased.
Final Step: Add some shading to your carnotaurus drawing to give it more dimension and volume. The value inside the mouth and under the brow should be extra dark. Pick the direction of the light source when shading so that the shadows are consistent with it. Vary the pressure on your pencil to get different degrees of tonal value. Shading can be very time- consuming, so be patient and take breaks.
Add a cast shadow underneath. This helps ground the dinosaur so it doesn't appear to be floating.
You can add even more value throughout your dinosaur drawing for extra detail. No one knows for sure what the carnotaurus looked like, so you can add stripes, spots, anything you want! For a striped pattern like this, use a darker value to create spike- like shapes across the back.
Use a medium value for the rest of the body. Don't shade too smoothly. The rough value adds a scaly texture. It's believed that, unlike a lot of other dinosaurs, the carnotaurus may not have had feathers! Don't forget to pause the video after each step to draw at your own pace.