Tap Shoes in low key!

My girlfriend wanted a picture of her tap shoes, and requested a low key effect. I've read on flash and strobes setup, but this is uncharted territories for me. But, after a few (almost 40 pictures), we found a setup that didn't have any bad shadows, enough details where it was needed... something we could work with.

In the end, pretty happy with my first low key!



Technical information:
Shot at 55mm, ISO100 f11 and 1/60s.
Used a 580EXII on camera but only as a master. It was toned down -2 1/3 stops
A single light source, a handheld 430EX with no diffuser on the far right side, just over the camera plane. It was far enough to the right that it did not light the inside of the shoe.
Post processing was darkening the strap (upper left) as this part was hit hard by the flash, and blurring the lower right part of the seamless since it had reflected a little light.

I'm learning and want to improve. Don't hesitate to post constructive criticism!
Je veux m'améliorer. N'hésitez pas à me donner des critiques constructives!

Enjoy!