Don't get discouraged or frustrated about painting clothes! If you've never done this before, start with small painted parts (I don't know, something like a table cloth, it drapes nicely over the sides of the table). What I like to tell people is to take a real piece of clothing and lay it down in front of your drawing board... as you look at it try to copy the folds and creases... use all those tools that you find in the tutorial to help you... Then after sometime you will be ready to get into more complicated things like dressing up a model. It is little time consuming, but I think it is worth of trying!