Unfinished - Birthday Gift - Mondaiji

This is another one of my unfinished drawings, and another birthday gift, this time for AnaCarok. Technically the main problem with this one was that sincerely I forgot about it, and so didn't finish in time. I think I didn't even congratulate her on her birthday. I feel bad for that. :/
But what really bothers me is that am being unable to draw the characters properly.

I don't want to give up on this drawing, even if I didn't finish it in time for my friend's birthday. I decided to finish this no matter what, so currently I'm working on it.

Either way, this is a fanart of the anime Mondaiji, which I know is her favourite. :3
This was supposed to have more characters, but it's as I said I was unable to finish it.

Mondaiji-tachi ga Isekai Kara Kuru Sō Desu yo?, Kuro Usagi (the giant woman), Izayoi Sakamaki (the boy on her shoulder) and Shiroyasha (the girl between her breasts) are © to Tarō Tatsunoko (light novel writer), Yū Amano (light novel illustrator), Kadokawa Shoten (light novel publisher) and Diomedéa (the studio which made the anime adaptation).
Art is © to a.k.a. me.

Edit: I decided to redraw this completely so I erased everything. I'm trying to learn to properly sketch my drawings before properly drawing.

Edit 03/18/2015: The credits were incomplete so I fixed them.