Moving from US to France as Freelance RPG artist

Hey there!

I was hoping to get some insight on this. My fiancee and I are considering moving from the US to France, and was wondering how feasible it would be given our circumstances. I am a freelance artist that makes maps for tabletop RPGs, and have done considerable work with a French board game company.

How difficult would it be to acquire a work visa or residency given these conditions?