Here's the picture...
I havent done any machine applique, but I do lots of hand applique. I've only been quilting a little over a year and a half, so am still a bit of a beginner, too. Nothing's over your head if you have the confidence to give it a try.
And if you're really not sure, try it on scraps first. Besides, this is for your daughter... she really won't care if it's perfect. She'll love it because you made her a quilt that has butterflies!