I have done it! I have put my first pattern on Ravelry. It is a free one, but I'm super excited anyway. Here it is, the Easy Faux Brioche Hat and Scarf Set. I thought it would be a nice idea to use the same name for the designer as I used for my Etsy shop.
There were a lot more steps than I thought there would be when adding a pattern to Ravelry. It makes sense, since each of those steps helps to put your pattern under the right categories and makes it easier to find in searches. I was just so excited that I might have rushed it a tiny bit. Although, it looks like just in the time it took me to write about it, 8 people have already downloaded the pattern! So exciting. I hope they get started right away, I want to see what they make!