You've started 3 threads in 2 weeks; in one you say you're thinking about opening a
FLGS and this one about starting a painting service. I'm going to answer both of those things here.
For starting a
FLGS, you are going to need a lot of money, and a lot of time.
There is a series of articles you have to read that you can find here. I can't find a good index of these articles, so just change the number in the address bar to go to the next article. Long story short, you're gonna need about $100 grand or have that in equity somewhere - if you've got those sorts of numbers available, read the articles. If you don't, concentrate on the painting.
So far as the painting, now. I don't think your painting skills are at the level that you can reliably turn a profit with. On some of the miniatures, you've achieved a mid-tabletop quality standard - the Tyranid, and the
DV miniatures. Some of them - the Word Bearers Dark Apostle - I think you're delivering a product people are probably not going to want to pay money for. I think you need more practice to deliver more of the former and less of the latter.
People will definitely buy models in a tabletop standard as long as you can crank them out consistently, and very rapidly. You won't get rich, but you can probably earn some pocket money this way. My advice is to pick one specific unit and really hone your skills at it and sell those repeatedly until you can sell them on ebay for a good profit, including
shipping. After that, look into the painting service.
Finally, your photography could be improved simply and cheaply. Read
this article, and also
this one.
I wish you the best of luck in your endeavors.