C&C per req:
It's a start... The first thing that strikes me is that the crop is way to close; you've got off both elbows and some fingertips. Cropping limbs is fine if necessary, and when done boldly, never at/near a joint and never along a lateral axis. As with many things, the devil is in the details; the blocks could have been straightened to form a nice arc, and her shirt rolled up evenly to avoid the wrinkles. Exposure is a touch hot, but nothing that you shouldn't be able to correct in post. I'm also seeing a slight green cast.
Overall, not bad, some niggly details, but if your friend is willing, take advantage and practice some more!
Just my $00.02 worth - your mileage may vary.
~John