First Impression - the most important one: Interesting incorporation of the feather with the heels ... well done.
Composition: This is not bad. The problem areas have already been raised and this is the grate behind the subject and the flooring. Both of which are distracting elements.
Subject: Meets the challenge.
Technical (Colour and light): Goof lighting ... reasonable colour and good focus. With a change of background you could have played more with colour I think.
To grow its vote?: Think about where you are shooting. I have find it extremely important to not have a busy background or base (floor) for the picture unless it is intentional.
Summary: Good pic .. well done for this challenge. And so far away from what you have been shooting .... never be afraid of trying new things.
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The background here is what will bring this picture down. The image & idea are great - taking time to photograph the subject against a white background would have added alot to this image. 6.
I find the floor and the grate extremely disassociated from the overall image. A solid white backdrop would have really showcased the black shoes and the vibrancy of the feather.