lemme explain the legs a bit more
while canine joints are really pronounced and muscly, you should only really show a feline's leg muscles (like what you drew on the hip) if they're in motion or being flexed
also a quick tip: if you drew a line straight between the butt / base of the tail and the paw, they should be aligned straight up and down from each other. not sure if i explained that well so if you need me to clarify more, i can xD