Oh, my, my! you should have so much confidence. I guess sometimes easier said than done. Really I have never seen such an eye for photography as you have. You could do so much with your work. My sister in law takes photos and then she paints them watercolor and makes greeting cards out of them. She also has taken photos and had them put onto canvas bags. She gave her greeting cards, empty inside, away for wedding favors at her daughters wedding. You need to get out there! :)
I took a photo of my dog when it was a puppy and went onto the CVS website, that's a chain pharmacy here, and uploaded from my computer and had them put it onto a coffee mug. A simple thing but I love it.