The SAI and PSD files , the lines of the dress is divided on 4 layers (with differents colors:
-Line of gloves (dark blue)
-Line of the shoes (green)
-Line of the dress (light)
-Line of the Under dress (orange)
And the PNG file have the body with the dress separated from the shoes ( in the png picture, the shoes are in the right up part) , the dress lines are black and is transparent.
Use ittt pleaseee <3 I hope you like
Original pic [link]