If you need help faking being NT that obviously means that you are not NT. If you are non-NT then there is no way you can convincing come off as NT. Do they actually think normies spend time working on their social skills? No normie has ever done that, it comes completely naturally to them. It's like breathing or eating.
Being ugly won't stop you from behaving in a NT way. Being socially inept or NATP has other causes than ugliness. Yes, ugliness contributes a lot in making people socially anxious, NATP, etc. But there are other reasons than ugliness if you see what I mean