I think it looks great for your first try!!
Linda sure has some great advice. It does take lots of practice. I don't do much of the machine applique cause I am so much better with the turned under hand applique - and even that's not perfect. Heck I was trying to do this teeny circle on one of my flowers and decided to use a button instead! By the time I am done with this quilt, there will be lots of flowers which means lots of buttons!
Good luck and keep practicing. I can't wait to see more of what you are doing.

Hugs,