Hi! What might seem a little weird is the position of some of the limbs: they aren’t quite realistic in relation to the cat’s bone structure and body shape ;) Did you use a reference for your drawing, or did you just draw from memory? Cats are very flexible, so generally, when they stretch like that, their tail is also extended; but in your drawing, it’s relaxed, which does happen sometimes. Also since they’re almost at ground level when it's stretch, you can lower the torso considerably! As for the hidden paws, you can move them a little bit which will give the animal more weight and make it look more credible. The head is a little small; you can double its volume. Personally, I started by drawing the ground: it helps anchor the animal. Next, I sketched the skeleton in red, then traced the outlines. You can use a reference, as I did here. I hope this helps