Some of the most popular directories are free, I'm only on free sites at the moment and my top referrers are: punterlink; escortslist; puntingzone; openadultdirectory; exfactory; eros; e-scorts. That's just hits, it's quite hard to find out where guys found me, but the more attention your site gets the more calls you'll get.
Before you can be listed on those, you'll have to sort out your return links. I don't know how myescortpage works, but I imagine there's an option to provide a banner and link text which people can use to link to your site. You've done that successfully with your banner, but you've used the same option for your adultwork banner and that's not right. If you look, you'll see there's no way of getting to adultwork from your site except by typing in the address from the banner. You should be able to click on the banner and go to the site.
There should be another option for adding a link (you might have to insert the image and then add a link to it). Email me or give me a call if you want some help.
I agree with anjali about stating what town you live in. If you want to reach a wider audience, it's also worth listing the names of towns and regions that you'll visit, since that improves the chances that you'll come up in relevant google searches. Anjali's advice about using google to find sites worth listing on is also good.
And finally a proofreading note: there's no apostrophe in "applies".