You need to make her look more like what she is.

I had to read the replies to see that she's a border collie. Every dog breed has a different build.
Here'sClick
hereI've included a redline below too. My anatomy isn't perfect and I fail horribly at redlines but hopefully it'll be helpful.
Legs: Like Pikayu said, they have dewclaws. They're also a bit too long and far forward. The hindlegs are good, though I suggest referencing from photo's of real order Collie's to get them right. The 'knee' is too high up. See my redline below.
Head+neck: The neck is too long especially in comparison to the body. It actually looks like it's the same length as the body. You'll notice in
this diagram that the neck is less than half the length of the spine. The head is too large too. It should always be smaller than the dogs shoulders.
Body: The body needs to be longer and the back should be straighter.
Tail: What Pikayu said again. The tail looks like it's just attached randomly. It continues from the spine as you can see in the skeleton diagram above.