Princess Vivi from One Piece in her first appearance outfit (see references) stood in an alleyway, having taken the opportunity to get some relief in private, a hand down the front of her shorts as she diddles herself.

Private Commission

Girl from the pics fucked like in gon-vs-machi-2

Her shirt opened up just like in the other pic, white socks, no shoes, (skirt doesn't matter that much, if you feel like drawing it do so, if not then don't)

Bikini A-Chan

Original tiddie-size from the Animu (pic with the yellow background)

No horse dude, just do a normal one (you can leave the face blank, i really don't care)

Same position as the last pic, bikini top either fully undone with a tiddie grab at one side, or partially on done with no grab (really dunno just do whatever you feel like)

Normal Bikini bottom, doesn't need to have that skirt thing (or just move it so it doesn't cover anything) and the middle part slipped to the side