I did the marvel lash course at the beginning of October, the training wasn't great, I have since picked up lots of tips from this site since from people. I am still doing freebies at the moment, but I got some mink lashes from another company so I'm charging just £5 towards materials. I've done 11 people, I'm getting better. I'm waiting until early next year to set up properly as I am about to relocate. If you can I'd train with someone else I would. I got the marvel lash kit with the training, found the quality awful, I've bought glue from another company and have just been using my mink lashes which are on a strip, they are great. Since I got them I have not used the marvel lashes. If you do, ask lots and lots of questions, ask about the glue, there is nothing on their website about it which clients would ask you about. Ask about priming and sealing the lashes? We were never told to do that yet everyone else does it! How the lashes should sit? ask ask ask.
Good luck!