What file should I edit to change marketpress product page?

I would like to add a space between the product image and the product title on the products page. Which file should I edit to accomplish this (in the wp_content > plugins > marketpress ... then possibly marketpress-includes?)

Right now the title is displayed directly under the thumbnail image, and I would just like there to be some padding in between the two.

If you could also let me know which line(s) to edit, that would be fantastic as well.

If someone could help me out with this, I would be incredibly grateful.

Thanks in advance!