I used her t-shirt pattern for the top, and traced the skirt of her RTW dress for the skirt. I thought I added length, but apparently not. She wanted a strappy back, like the RTW one, but I'm not there yet. But still wanting to do some learning, I went with a deep scoop on the back, and the "cold shoulder" look.
When it came time to band the neck, the scoop didn't seem right. So I turned it into a V back. I played with some ideas of how to do the band like I normally do without having to do a real v neck because I hadn't done that yet. Gave up, followed a tutorial for a real v neck, and it wasn't hard at all although I didn't get it quite lined up.
THIS tutorial. I didn't add any width, and I couldn't use the notches to line up the cut because the sleeve is cut flat, not on the fold. I was worried that there wouldn't be enough of a gap, but it seems perfect. I folded the opening in, instead of banding it. I had to do some flubbing where the sleeve joins, but it's not really noticeable.
We went for a family week at a cottage, and wouldn't you know it....her cousin also had a cold shoulder skater girl dress!! That's almost as good of a compliment as when a stranger says they like your item and they don't know you made it :)