Add to the curb appeal of your house -- and increase its value -- with these easy exterior improvements. Welcome autumn in all its glory with a fall-themed door wreath. This ready-made decoration brings together a colorful mix of faux flowers, leaves, and other signs of the season. Best of all, it’s reusable year after year. Transform a slab and steps with the high-end look of stone. Then update a basic mailbox with gleaming copper spray paint.