My husband and I are finishing our formal dining and living room with marley heirloom crown molding. The LR/DR has an archway to a small hall that goes into the kitchen, utility room and garage. We don't want to continue the molding into the hallway. Unfortunately that leaves us with a difficult problem with how to end the crown molding at the arch's corner (outside croner). None of the wood outside corner pieces seem to be big enough for this wide crown. Is there any easy answer to how to finish this without it looking stupid or unfinished?