And lack of respect towards the laws of physic :3

Was "The Black Cat" your inspiration?

No, I haven't read that but I read Gunnerkrigg Court. I can't explain the process of finding out compositions, I usually sketch more idea and version. One idea was a cat with one lively shadow, but somehow I didn't get what I wanted from it. So then came the double shadow.

Aaand now let's see how much inspiration did I get from the comic: https://www.gunnerkrigg.com/?p=2
Eh, maybe too much similarity. Either I have a too good memory or just can't draw meneacing-looking shadow in too different way.