Wait until after you've seen someone and are sure it's gone well and he's satisfied.  Then say you'd be happy to be a reference for him with other ladies (but you'd better know how to do that right) and, since you're just starting out, would he be willing to review you here or on another review site he's a member of.  But you'll have to be patient.  Many guys don't even like the idea of a review, don't feel comfortable writing them for other reasons, or are just too busy.
PS: I went to your site and think you should remove the "Erotic Reviews" button until you have some  to link to.  Now it just says there are no reviews yet, which just makes it obvious if they didn't know already.  I mean, why virtually advertise you have no reviews?  Also, I'd add more pix.  In addition to the candid ones you've got (which are fine) consider getting shot by a pro.
Good luck!

Yes, it's okay to ask us to post HONEST reviews.  Don't offer discounts for us to do so.

If the reviewers don't usually post reviews, it might take several before some are approved and you get a profile.  First reviews on first time providers take a little more time.

Now my comment:  You might want to put your location in a place thats more obvious on your website.  I had to really look and can only guess based on your screening page.  The Services/Donations or the FAQ page would be my suggestions.

Play safe be happy

as in, it's totally fine - and completely understandable - to ask for a review.  But do NOT make any requests as far as what the numbers should be, or what they should say.  Give the hobbyist complete opportunity to be candid and honest.  And never, ever, ever agree to a reduced rate for a review -- if word gets around that you've done that, your reputation will seriously suffer.

The "erotic review" tab can come off, but the logo can't if you want to advertise here. However, they probably will kick back your ads to tell you the TER LOGO needs to be on the very first page (age check) where it is clearly visible.

Just my .02

Have fun and play safe!

Summer

Come to Chicago...I'll review you.  Nice pictures.

As for guys with no review history posting first reviews...not necessarily a good thing.  If both are new it generally takes several reviews to be considered verifiable.