Here's where the real fun starts .... Are there any bars in your area that hire singles? If so, go in and talk to the manager - tell them what you do. They may tell you to contact some agent who does their hiring. Or, if they do the hiring themselves, and if they're interested, they'll ask you to name a price. When you do that, the blood will drain from their face - or, the blood will rush into their face - your price will be far beyond what they pay. Etc. Be ready to direct them to your website, youtube vids, etc. Chances are, they will ask you if you have a 'following' - if you don't, have some kind of an answer ready.

I would start with some place that I've done the open-mike at ....