Question with blending layers

I am having a lot of trouble… Having the layers like blending to work? I dont get what im doing wrong, but nothings changing. It seems to work as a normal layer. I am trying to draw fire, by distorting and blending the image, but not a single one of the blending layers even does anything but draw overtop…?

is there a special tool im not seeing…?

As for effects, can you try clicking render view and see the result?