Hey Lluis, there is some solid stuff here, especially the horse. I will say that the Coraline shot is a bit awkward. You're not really using it as reference, but rather reanimating exactly with different characters. Basically rotoscoping, which is frowned upon. Using other films for inspiration is great, just be sure to…
3D wise: ur weakest point is lighting. Ur scenes tend to maintain a pretty high ambient lighting which diminishes drama and flattens composition. If u want to keep it light-value, at least fill ur shadows and lights with cool vs warm 2D wise: ur work is so varied it doesn't deliver a clear message as to what u can do.…