Grain can certainly be an artistic choice. Some grainy textures can be more likable than others. I like the grain of old Tri-X black and white film. Each grain was a black dot, rather than like most of other films that had different gradations of grain.
Your images have magenta and blue grains on the skin. In my opinion, this type of grain is not the as bad as grain that has 4 or more colors mixed together, but I don't find it particularly flattering either.
If you like this particular grain effect, then that is your choice. If you want to experiment with it, you can manipulate the quality and/or the amount of grains in photoshop. You can make all the grains the same color. You can make the grain get more intense, or you can melt it away, so your photo is more smooth. You might like your images even better.
Last edited by brucer007 : 12-09-2010 at 10:09 PM.