Turtle Greeting Cards

I am trying out a service that Daily Paintworks offers. I can post some items for sale. To try it out, I have put up a page (that can be found in my gallery) of two greeting cards with turtles on them. I don't exactly know how it works but I am willing to give it a try. I think DPW will send the information to me via email and I will contact the buyer for payment. I was hoping that I could set up a Pay Pal button for the cards but maybe I'll figure how to do that in the future.

These are the designs on the cards. This is a link to the turtle card page.