Character looks and details

Nate was a short, shy and meek boy who was picked on his whole life but all that changed when he gets a Job at Jurassic World and meets Echo a strong, tall and brutish hybrid who is one of the 4 human-raptor hybrid siblings. (Btw sorry for the tracing it did for the cover, I don't know how to draw, the original pictures I used do not belong to me)