Okay, I think there is an outtage with iTunes match. If artwork didn't show up all I had to do was delete the album from the cloud, import it again, re upload it and the artwork would show. Now no artwork will upload and after turning iTunes match off and then on not a single album cover will come up in my entire library. I googled this and looks like lots of other people are having this issue. The problem started yesterday, if you add new albums to iTunes match the artwork will not sync.