nice work Jim
next time if you put some fine car filler paste or normal decorating fine filler around the melamine and then sand it smooth and seal with a spray on lacquer you'll get rid of those "tags" inside the mold where the silicon has crept between the melamine sheets.
This simple step will triple the life ecpectancy of the molds because as you remove blanks from them the resin will grab any texture or tags inside the mold and pull pieces of the silicon which will eventfully lead to an early breakdown of the silicon and the mold will be scrap.