craftgrrl | Why does metalic glittery paint go on as if it's sticky and you can't get a good coverage?

I couldn't get a decent coverage cause it was so sticky and it was thin in some places. I did the best I could for a top coat and will try another coat tomorrow, but this might of been the wrong paint to choose for this project, or could it be not applying properly cause I am using pine wood?

I have used metalics on wood items before with perfect results, so why the shitty results on THIS project?

I don't have the same coverage problem with regular paints.

And my second question, is what is the largest craft paint brush I can get? I bought some big ones at OSH, but they suck as a craft brush for some reason. They do not do a good job at all of being smooth or even and they split strait down the middle so there's a huge cap in the middle of the bristles.