Who can I pay to finish my E-commerce site using Gridmarket?

Ive been playing with the site a couple days and ive got mostly everything running how its suppose to. I just dont know how to design my site how i need it to look, with the login buttons and registrations forms and etc. I figure it would have to do with alot of codes because i cant find the tools dealing with such.
Is there anyone willing to create my site for me or possible walk me through it someway ?