A well set up image that works well. Dual firing of the flash to get both images (and putting on a jumper between). A really good image for the challenge.
While difficult (probably impossible) to do, the only thing that gets me on this is the whole image is static, whereas it really does need some dynamic element to it, whether that is a slight blur to the fist and the head or something. That is the only thing that would turn this into a brilliant image
Unscharp for movement could mean an appreciation.
Why not the same attire?
An equal attire reinforces the aim of the theme: double picture.
Laudably the good balanced composition.