If you want to get there, you totally can! It's a ton of work and stress, but so far I think it's worth it.
I LOVE doing conventions, but they're definitely an investment. Make sure to prop your items up vertical and get some sort of banner to draw people's eye! There are lots of people that like original work, it can vary on the convention's audience though.
If you ever need advice on them, search the forum for some threads related to cons and printing. I've probably posted in a fair amount of them myself! (And if you ever have any specific questions, feel free to reach out )