3 simple steps.
Users contact me , i provide a demo , if they like it i provide them a production account , they work for 1 month , if they are happy with the results they pay.
easy as 1-2-3
Your service is very good but it is very difficult to trust anyone in the online world. Because now the scammers have become very smart so it is very difficult to understand their traps. You are new to this forum and your rank is Newbie so I doubt whether anyone will trust you or not. But if someone wants to take your services then definitely don't forget to use Escrow service for that.
Good Luck