Decorating your front porch is a nice idea. The first thing you should start with is the front door. You should make this corner look welcoming and inviting for anyone that approaches.
So, where to start from? I would say the door itself. You can add a floral wreath to make ti more pleasant. And also, you can add a fun looking house number label. Add something decorative on the both sides of the door to achieve balance. Go for flower pots, or anything else that you find pretty.
