Correct type of shower handle to use for valve that sticks out too far?

I'm attempting to install a shower handle on an unfinished build. The problem I'm facing is the handle plate does not fit over the white pipe that is sticking out of the wall. Should that white portion be sticking out past the tile?

The handle I bought fits right over the valve, but it doesn't fit over the white pipe. Did I just buy the wrong type of handle, or is there some kind of plate adapter to work around this problem?

Edit: Here's a pic of the plate over the valve. This was the reason I made the assumption that the valve stuck out too far. I like the approach of taking the pic to a plumbing store to make sure I end up with the right type of handle.