don't forget to advertise, it's very important. you have very few keywords, add more. and they could all use a good description - it helps the viewer and google. you also may want to scan them in, partly so they are sharper (i would say they are on the line of whether they would print or not), and you can sell them in larger sizes if you scan it at a high dpi.
on average it will take me 3 months or more to sell something new.
---Mike Savad