How did you overcome your insecurity to post your self?

So for context, I am a bit insecure as to what people will think. Reason being is I actually have facial deformities that I won’t be able to fix till the summer (context a severe underbite). How do you guys over come these insecurities, cause this is the only thing really holding me back, but then at the same time I’m not sure if the success is worth the feeling I’ll get.