Top row from left to right: Himawari from Yuru Yuri, Suzu from Hyakko, 's dead girl, my donutsteel
Center: more donutsteel, and generic girl with bubble gum.
Bottom row: Princess Yggdra for (I still remember). And some animals.
The black and white with hard shadows sort of reminds me of Yuuji Himukai's style (the dood who does Etrian Odyssey art)