Scared of becoming a mother

Hello, this may be a little weird or over the top anxiety....

I am 26 and want to have a baby in the next 3-4 years. I’m just so scared I’ll be a terrible mother, that I’ll make so many mistakes when it comes to teaching them things, what to tell them, what not to tell them, I have general anxiety disorder (with catastrophic thinking) and depression.... I feel like I’d get the worst baby blues or something lol so really my question is, should I even be having a baby if I’m feeling this way.