Lining up the 2 large pieces with pins instead of marker. But if you want to use a marking pen use something like this
I used a magnetic snap for the closure and covered the back side (top of the casserole carrier) with a button I glued on.
I etched the side of the casserole dish with etching cream so the rightful owner would get their dish back. I cut out a stencil with the Silhouette machine