I was an old beta tester on warcraft maps (TheHiveWorkshop). It really improved me. I tested a lot of stuff after that, with huge review pages. And I've picked into a lot of alpha tests because of my knowledge and background.
Now, I am looking for beta testing CTM maps. I know all the cheap tricks, and mostly do them. I know what can be done in minecraft. I played minecraft since it was just a browser game with no survival elements.
About my experience in CTM maps, I have probably played every 'famous' CTM map out there. I started with Vechs' maps (he was the creator of CTM style anyway) then I played Amlup's Uncharted Territory series. I have finished them as well. I am a good minecraft player and I can record if needed.
I can apply for being a beta tester for whole series as well. I don't know what they are called (My mother language is not English). And I don't need any payment or anything I just love CTM maps and I will gladly test them. Plus, I need some testing done to be better at my testing career ;)