All you need to do to get fiverr customers off fiver is be clever in your questioning.
"Hey, if I order 4 gigs can I get one free?" IF so contact me at name @ Gmail"
"Hey if I buy this gig can you do it exactly like this website.. ." then hyperlink a webpage with your request and e-mail
100 different ways so do not worry or even wait for 1000. Fiver takes 20% of every job why don't you take back 20% of every customer.