Assuming you’ve weighed up the practicalities of driving a right-hand car in France (i.e. safety), the first thing you should do is contact us. (There are plenty of small details to consider, on which we can provide further advice).
We have had plenty of experience in this particular area of insurance and have a wealth of know-how to help guide you through the minefield of administrative paperwork! (NB: Cars which have not been imported into France by French importers can sometimes be difficult, or even impossible, to get registered, particularly so for vehicles first registered before 1998. Note that some départements will exceptionally require all documentation to be in French.)