You are the solution
what foreign teachers don't want to hear
Many foreign teachers forget that they're not in Kansas anymore, and demand that their hosts adapt to them rather than trying to find a middle-ground where a reasonable compromise can be reached. If many foreign teachers are the problem, (and they are), then they are also the solution.
Advice you can truly use
Don't listen to those barstool experts!
Having been warned-- or advised-- that appearance is very important here in Thailand, (just as important as Japan, Korea, or Taiwan I suppose), I set out on job interviews. Most of the advice for teachers on the Thailand websites struck me as either superficial or downright absurd.