Hi @Varvara, nice studies! - The perspective is pretty close to correct, but there are some errors in convergence and in the angle and openness of the ellipses. How much experience do you have drawing simple forms like boxes, cylinders and spheres? Having a strong grip on those really helps when drawing more complex forms, like bones. Would you mind filling one page with cylinders from different angles, from imagination, and another page with boxes from different angles from imagination? Then tag me (@Jesper Axelsson) if you want me to take a look. Hope this helps :) Let me know if you have any questions!

Hi Varvana, I like that with some of the animals I'm seeing attempts at building out the perspective of the overall shapes of the animals, specifically with the cow. I think something that is slightly lost in that process is exploring the dynamic angles of the motion of the animals in motion. They instead feel a little stiff and stuck in a box. I think maybe giving the legs of the animals, either with more dynamic reference images or exaggerating others could help you.