Mock Turtleneck Sweaters

I bought several mock turtleneck sweaters a few years ago.  They certainly work fine as a sweater, but now that I've started remixing they have become a bit more difficult to work with.  I don't have a lot of ideas on how to layer well with them, but I'm trying to work with what I have on hand.

Sweater:  Express
Vest: Target
Pants:  Express
Belt:  Asos
Shoes:  Mudd