Hmmm...I think you need to weed out the portfolio pics. The little boy close up is off color, the purple flowers are very out of focus, even the wedding band shot is not in focus, several pics need to be cropped and recentered, etc... You asked and since I have tried to become a photographer I am really good at identifying mistakes!
I make more than anyone! I can critique pictures all day but still make the same mistake in mine. I try to compensate by just taking LOTS of pictures and then throwing out the ones that do not make the mark.
Sometimes out of focus is an artform taking advantage of a short depth of field, but I think the ones I mention really are not meant to be that way or at least would be better in focus.
What kind of camera are you using? What about software? Do you have photoshop? If you shoot in raw and then use photoshop you can fix almost anything.
If you really want to get in the business, you may need to shoot some events free to get started. Shoot free and charge for prints. After you get several paid events under your belt, then you can go ahead and establish a shooting fee and make package deals for prints and possibly CDs.