Step 15: Draw the reindeer's antler on the other side the same way. Most of the other antler is being blocked by the antler on this side, so only draw the small section peeking through. Follow the path of the first antler to create the second one but don't let their lines overlap.
Step 16: Use the lines under the right side of the body as guides to draw the caribou's front legs. Lightly sketch the shape of the leg as you follow the guide. Darken the lines only when you get the leg's structure right. Add a couple of small lines at the bottom for the hoof. Draw the front leg on the other side the same way. Sketch the leg lightly at first as you follow the guide. Darken it only when you get the structure right. Add a few small lines at the bottom for the hoof.
Step 17 Use the lines under the left side of the body as guides to draw the reindeer's hind legs. Sketch the shape of the leg lightly as you follow the basic path of the guide. Darken the line when you get the shape right. Pay attention to how the leg bends backward a bit. Draw the hind leg on the other side using the final line as a guide. Don't forget to add the hooves at the bottom using short lines.
Step 18: Use the remaining lines and shapes as guides to draw the rest of the reindeer's body. Add a few extra strokes on the left side of the body for the short tail. Use a few quick, short strokes for the section under the neck for the loose skin found there.
Step 19 (optional): Erase as much as you can of the initial guide lines for a cleaner look. Don't worry about erasing all of the guides. It's okay to leave some behind. Re-draw any final sketch lines that you may have accidentally erased.
Final Step (optional): Add some shading to your reindeer drawing to give it more dimension and volume. Add the value lightly at first, then gradually build up to the level of darkness that you want. 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.
Add a cast shadow underneath. This helps ground the reindeer so it doesn't appear to be floating. Use a darker value near the middle of the shadow and a lighter value along the edge for the shadow's diffusion.
You can add even more value throughout your reindeer drawing for extra detail. Add the value by using strokes that go in the general direction of the fur. Don't worry about shading too smoothly. The rough value gives the coat a coarse texture. Shading can be very time-consuming, so be patient and take breaks. You can add the value to different sections of the body at a time to break up the shading process. It's always a good idea to use reference for a more accurate drawing. Remember to pause the video after each step to draw at your own pace.