I'll take a stab at these.
First, you don't need a picture in your character sheet. It's good to have one just because some people prefer a visual accompaniment to your description, but it's not required.
Second, you can't make up abilities. Mizahar has set magic, gnosis, and skills. Unless are you talking about him having hallucinations that these things happen? I mean I guess you could have hallucinations, just be wary that people with certain disabilities don't typically make it very far in Mizahar, because it's a harsh, deadly, unforgiving world.
Now if you literally want to open rifts and potentially have creatures come out, you should check out
Voiding. Other than that, it's been said before and it's an important way to look at character creation, if you had a per-generated idea for a character in your head before ever coming to Mizahar, don't try to bend Mizahar's lore to fit your character, always bend your character to fit Mizahar's lore.
Other than that good luck and have fun.