Her problem (I think) is that she crosses over way too far. She's practically crossing her legs! It makes her look wobbly and unstable. She's only a little thing, her legs aren't long enough to get away with that
To see it from the postive side I have the feeling Cara is less "stomping" down the runway this season. Unfortunately she is yet not able to control her arms. Everything looks just way out of place and too exaggerated.