First of all thanks for doing a French Kit, it's very much appreciated in a hobby that is so ANSI-Centric.
Renders seem to be Cherry Profile, what manufacturer will be used for Cherry Profile PBT ?
What legends will you use ? Will they be dye-sublimated ?
Since we're talking Azerty, I have a few corrections on the French kit.
Few keys have a third sub-legend, they don't appear on your kit. Also a few keys need to be lowercase.
See the correct keys I put in the picture.
Here's a French keyboard with correct legend.
I'm only talking about the French portion of your kit. I hope The belgian portion is correct.
EDIT : Also you need AltGr keycaps and possibly Legend only Modifiers to be attractive to the ISO community.