Over time, and when I feel like my paintings have reached a standard, they are framed. Some are done professionally, like the grandchildren paintings below. I plan on keeping them and consider it important to have them done properly.
I call the grouping directly below, "The Fruit Series." They are framed with standard frames but custom matting. I don't care for the matting that come with the frames because they are not cut to fit the painting. It's important to capture the painting within it's natural border, and not crop them all to the same size.
Our hallway is just about perfect for watercolors due to the protected space away from direct sunlight. I use professional grade paints, but even they can be undermined over time, if not protected.