It’s much easier for others to promote your Facebook page when your art is well organized in photo albums.
Create photo albums on your page that make sense and that have only related images within them. Organize them as you would on a website.
If I want to send my fans on Facebook directly to your body of work, I will link to a photo album.
Facebook, not I, decides which image to feature from an album on my wall. If you have unrelated images in an album, a random image might appear on my wall – not at all showing your art at its best.
To help others promote you on Facebook, show your art in photo albums as if they were portfolios. Here are a couple of nice examples.