I am in the process of making several of these princess stand-ups for my dd's 4th birthday party. They are 4x2 mdf particle board. I use acrylics with the exception of the background, that is plain 'ole house paint. The first Rapunzel was the very first one I did, before I realized I wanted them to be more "life-size". I need to do second coats on the larger areas, but overall I am pretty happy with the way they are turning out! I have four more princesses to go, plus a few princes. Also, the backgrounds are all the same color, my photography skills are very lacking!