I hope the many differences are spottable, it's easier to see it in the .psd file with turning the layers on and off (can I provide a downloadlink here in the description?)
So the source photo is a private photo from a friend of mine and his girlfriend, they're surely gonna marry one day, but due to the contest-rules I had to cut out my friend, so only his girlfriend is in the spotlight, hehe.
As always, I forget to keep my layers , so i can't provide you a big step-by-step-guide, but I added a few little changes afterwards now, so it's at least a small guide with lots of description.
Special thanks to akasha for reminding me about the contest rules and my friend (and his girlfriend) for allowing me to take this photo.
I'm sorry for the bad quality, next time I'll try to chose a high quality snapshot. (5 years and 1960 days ago)