everyone has the potential to sell. but you have to think about the type of people that will buy it, and advertise to them.
but for starters you need work that's printable. this looks like you shot it in a moving bus. it's very motion blurred. remove all that stuff from the description, only describe what this is. if you know it's blurry, as stated - don't post it. you should only show your best and that's all. if it's soft, even as an original, you'll look like an amateur. you need more keywords describing the scene, country of origin, ethnicity, religion etc
this one has compression issues and rainbow noise. a buyer may be turned off, and it will probably not print. again - keep the description simple, the buyer doesn't know or care about features, and it just makes the page look messy.
see the corner? you shouldn't. it's also crooked and its not in focus. presentation is very important. even if it wasn't being sold as a print, and it was only a gallery image - all images should be in focus, not dark (not if it wasn't originally), not crooked, noisy, or blocky.
i can see this selling. but be sure to mention the type of flower it is, the time of year, colors, etc. things people would type to find something.
this one is way too small
you should be charging more for your work by the way - after you get better scans of your work.
be careful about the corners darkening. its not that sharp. many of these images won't print due to clarity issues. and if you can't fix them, you lose a sale and maybe a customer.
this has very limited use. it's also spelled wrong, unless the a has a line hidden. it's very soft, it's been enlarged 3 times. if you want to sell big, you have to start big.
you don't want that white line on the bottom. the name is rather close to the edge as well. its not that sharp, looks enlarge by about 10%.
overall i see work that could sell, but you have a lot of issues with clarity. the description box should only be for the describing of the items. not the features you got, it only adds clutter. after that increase prices, and advertise. your bio is ok, but i would break it up into paragraphs to make it easier to read.
---Mike Savad
MikeSavad.com