How to convert bi fold doors to solid doors?

Here's one idea Barbara!

https://diyshowoff.com/2011/12/04/diy-project-parade-closet-doors-how-to-turn-bifold-doors-into-french-doors

Here's another good tutorial: https://www.youtube.com/watch?v=GosKhENDt1I

http://the2seasons.com/2015/11/17/how-to-turn-bi-fold-doors-into-french-doors/