The rhinos look great! I think you made a lot of great choices in the light and shadow version. The seal drawing doesn't have the same line quality as your rhino drawings do. See if you can emphasize the darks and lighten the lights a bit more. Hope that helps!

Looking good! Confidence will come with practice. Start with long, loose lines and slowly work in details. I liked your character so I tried my hand at a quick sketch. It’s a tough pose to draw for sure. Good stuff. Keep it up.