Even PROCESS shots can be look good, there is no reason they shouldn't but the FINAL images meant for your gallery MUST be of the highest quality.
Remember to keep a folder on your computer with all the raw files. Once uploaded, they are no longer of the same quality (so if you need to submit an image for a contest or scholarship, for example, you have to use the ORIGINAL not one that has been posted).
The video below summarizes some of the things we discussed in class. Watch it for review.