Here is a picture that may help you choose an appropriate fursona.
a rule of thumb is to make your fursona at least 30 times less hideous than yourself while still retaining the quality of omg wtf is that thing I am about to vomit.
Oh yeah and don't forget when you become a furry to tell your parents and friends. they'll think you're cool and give you presents and stuff.
And wear an expensive fursuit that looks like some middle school mascot outfit and walk around in public with it alot. please express to everyone why you are so awesome, and furries are cool.