i got a real request! Options

[Smarmosaur]

so i'm just sitting here minding my own business, entering a contest, and i go to check my mail and BAM! i got a real request to design a div overlay for some organization's website.
i have no idea what to do. this is a good opportunity for me, and my first design for anybody else. what do i ask first? what are some questions i should ask? how can i be professional without being too uptight? i'm so freaking out right now.

[Smarmosaur]

wow. he was actually really prepared to tell what he wants. he said to design it after my website, and he included a quick little image of what he sort of wanted. we've e-mailed a couple times today and he's really easy to work with. thanks you two, if you wouldn't have responded i probably would have just been like "what do you want?"
i'm really excited. =D

one thing, though. how should i send files and such so it's easy for him to upload? or do i ask him permission to his whatever he's using?