These pastel paint pens are fantastic for painting very tiny details on artwork. I almost feel like I'm cheating! I used to always use brushes for detailed work, but occasionally these are a really nice option. I make tiny figures for nativity scenes and these pens do a beautiful job for painting miniscule eyes, eyebrows and lips. These were pretty easy to get going ( be certain to follow directions to get the paint flowing) and surprisingly (to me) they don't dry up when not in use, as long as the caps are kept on tight. The colors are well-pigmented, vivid and very pretty. If you are painting surfaces that could be subjected to handling and wear, you can spray a clear - coat finish over this paint and it increases its durability. (Acrylic is pretty durable on its own, though) These pens are very good quality, highly recommend!