Do you have at least 500 followers?
Do you host giveaways for free (meaning you do not require the sponsor to pay you any money nor do you ask for an item to review)?
If the answer to both of those questions is yes, then let me know! Sometimes my friends have so much fun doing a giveaway that they want to do another one, or my blog isn't a perfect giveaway fit for one of my sponsors, or sometimes I'd just love to be able to spread the love around or send a friend to you if we like your blog.
Thanks a bunch and happy hosting!