How to not sound gay

The first thing you need to understand with voice training is that you will sound "bad" at first. You are going to go through an awkward part where things don't sound quite right or that it sounds strained or obvious you are modifying your voice.

Best you can do is change your mannerisms and way of speech. "How do I sound less gay" has got to be the funniest thing I've read all day. There are exercises you can do to deepen your voice. It sounds like you're not opening your mouth very wide when speaking. Like you're talking through your teeth.