Ramon, I think your idea is very nice, the legs are soft and the skin is smooth;) Quite a sexy scene.
However their are a few things with the photograph that I think could be improved upon.
The first thing is the focusing - I imagine your intended focal point is the shoes / feet considering this is a feet challenge, yet they are very soft which is a real shame.
There is a lot of detail in the shoes which really needs to be pin sharp to show it's full detail.
The second thing is the background. Now I may be wrong here, but most people go for a pure black background - if that was your intention then you needed to under expose a stop or two as i can see the ripples and creases.
Finlay, the overall exposure is a little under exposed on the legs, a quick fix in photoshop would be to adjust the levels which would sort it out. To get it right in camera I would have shined less light on the background, and a little more on the models legs.
Overall I find 5.7 a fair score and a worthy effort.
this crop is not very flattering if you were tring to get "Leggy" as the main concept across. he may be leggy, but the position on the butt and thighs and the fact that the knees are cut out of frame makes the lower legs and feet appear stumpy to me. Lighting is pretty flat too. This might have been a good candidate for a black and white conversion to emphasize the high heels and feet.
the crop seems a little strange. the way in which the picture was composed makes the legs look odd. also the black shoes get a little lost against the black background.
The man shouts: WOOOWWWW. Took me some time to look at the feet and not elsewhere. Good lighting and clear picture. Good composition. Maybe if it was cropped to see more of the legs would do better. 7
good idea for the challenge but the background color is too close to the color of the shoes to give good definition, I would have preferred a more neutral gray bg