how do i start a wedding stationery business?

I am a very very poor student with beautiful handwriting, this has been suggested to me before but I have no idea whatsoever where I would begin. any help would be very much appreciated

I've got a really good suggestion for you but first I'd like to say this, there are GAZILLIONS of businesses in that market so you may want to try to market yourself as more than just a wedding stationary writer. You'll get some great Idea's from this website and you can start here. I think it's perfect for you since your in school, it's something you can do in your sparetime.
Fiverr.com Check it out, everyone does something for 5 bucks. It's so creative. Actually I have a professional doing a logo for my business and I can't wait to see how it turns out. All for 5 bucks! Good luck! I hope you find your "calling" while you're in school:)