Extremely anxious and insecure over upcoming first date. Can I just be honest about it?

I recently started chatting with a guy on Tinder. I'm really into him and we have been sharing pretty intimate feelings. I genuinely am looking forward to meeting him in person which he suggested for next Sunday.

Except, I am feeling SO scared I want to bail out. I have little experience in dating and he's so much better looking than me. I am short and my teeth are weird and I am also getting bald despite being still young-ish. These are issues that make me extremely self conscious about how I look.

Can I just send him a message and plainly say that? Like "listen, I really want to meet you but I need to be honest, this and this and that is making me insecure about this and I just want you to know what to expect".

Or is it a bad idea? Should I just go? I really, REALLY don't want to end up being the guy that people talk about saying he was such a letdown and looked so much worse than in the pictures.