Awe, thank you!
Hey, at least you did it!!
Practice makes perfect, and I think sewing is a skill that you can get pretty good at pretty fast. I have taught a few of my friends how to sew, but I did it buy throwing them in the deep end and having them make full cosplays! I would say, go for it! You never know what you can do until you try. If you fail then you'll have learned a lot from it and be better the next time you try!
If you want to practice sewing, but you have no money, then make little pillows.
My sister and I used to make little pillows all the time when we were kids, because we could use old clothes or rags which were totally free.