My natural position before mewing was tongue on lower palate and nose breathing. I like every other benefit of mewing, but I don't want to have a wide, square, low gonial angle blockhead, non-tapering-chin appearance like Mike Mew. Should I continue mewing? Been mewing for almost 8 months and I'm 15.
Don't worry about that. For the most part it's part of how your chin looks naturally. If you don't already have it, mewing won't make it. On the other hand mewing has health benefits you don't want to miss out on for no reason like that.
Enjoy mewing, at your age it's awesome.
my story: http://www.aljabri.com/blog/my-story/