The triangle shape you created between the legs causes it to look like a frame, drawing your eyes to the center of the photo where you find nothing but darkness and some sky. I bellieve if you had pulled the legs in closer, perhaps crossing them at the angle, it would bring the attention back where it belongs. Good shoe choice by the way.
Cute picture. I like the pose, but it makes me want to see (even a small indication of) how they're hanging in mid-air. Is it sitting on a swing or a tyre hanging from a tree? If this is not possible then a plain background might have worked better, perhaps a complementary colour to the bright pink and make colour the whole theme. It's also slightly underexposed losing the summery essence of the pink boots. Got potential.
Cute. I like the angle of the feet. The background is a tad distracting. I wonder if it would serve you better with a solid backdrop? You might lose the sense of outdoors, but I think it might work better - or at least it would for me. Hope this is helpful!!