/cgl/ - Cosplay & EGL

I've been thinking of getting mini ema/wish placards made so people can draw their favorite character on them and use it as a charm (if they can't draw, I was gonna shove in a piece of carbon paper or a sheet for water decals). I can also get full size ones and offer commissions on them. Is this a good idea or is it a terrible idea and/or a gate for cultural appropriation accusations?