I've used mac for over three years now, and it seems to be losing it's touch at first it covered great, but now it makes me face look flakey and doesnt cover at all, what gives?

sounds like you need to use a moisturizer on your face right after you get out of the shower, even before you dry your face off. Then after you put that on then pat your face with a towel, and then put your make up on. See if that works.