25% of the full sized pic? Never heard that one before.
Your weight target for thumbs should be 5-7kb each. Yours are around 3kb, which is why they look sub-par.
Don't crop your full size pics so narrow. It just looks unnatural.
As far as the title goes, I was implying that it would be good to have "Amateur Models Stephanie & Lana" on top of each page. Don't give each page a different title. And if you do decide to put the title on top of each page (you don't have to) do not link it.
I consider the site listable as is, but you could you'll want to learn ways of improving your thumbs as you get more used to building free sites.