Sketch-Fu: Women's Footwear

As a third person If you show me that design alone, I might accept it.
But in comparison with others, I will prefer the previous one that has a nice harmony/flow with the design. It meant for that size.
As an outsider to this domain, I don’t have that precise eye for the proportions that you have.
Are there any other variations possible? If I am asking for too much then just skip it.

I do varied sketches in many domains. I enjoy the process of it/sketching.
These sketches together, might help me to open some door somewhere in that category.
Thanks for your help.