To be honest, it probably wouldn't have made much of a difference if you were oldest or youngest child, each of them have their advantages and disadvantages.

Do you at least enjoy making art? I suppose art has two aspects to it, pure (drawing) skill and ability to be creative. I don't think you necessarily have to be great at either to make good art, but obviously both can be trained and you are probably better at it than you think you are (you probably know that).

We as humans can express ourselves in many ways, if you find it hard to do it in a social context, maybe try to do it through your art. Use your experiences in life as inspiration, no matter how difficult that might be. Art can be considered an alternative form of human communication, perhaps one you may be able to utilize better than others exactly because you are not good at communicating in a normal context.

Anyway, I still suffer from not being able to socialize properly even though I am somewhat confident of myself, although it's probably easier the more confident you get. I stayed in school very long, wasted 3 years of my life for no reason other than that I didn't want to go. But now I am trying to do better... and I suppose I have been doing better as I've finished my bachelor within the set time. So I suppose chance for the better is possible. But I'm not sure what made me able to accomplish it, other than just doing it.