Skeletal by Scott Hartman.

Taking the head as size reference, the neck and tail seem too short, while the arms are a bit too long. The palms should face each-other, theropod wrists don't bend that way. (I was guilty of this one way too often.)

The legs seem a bit detached from the body, and too narrow at the top. Try to go for looser skin with softer transitions. As of now it's too shrink-wrapped.

As for the texture, I know scales are still very popular, but keep in mind that feathers are becoming more likely discovery after discovery.

With all of that said, some of the coolest dinosaur artworks get away with a lot more (looking at you Jurassic Park), and the medium allows for you to play around with proportions and the likes, so feel free to take everything I said here with a grain of salt.