The doorway is the frame to your house and the focal point for everyone entering. They walk up to it, wait at it for you to answer and step through it so it is important to make a good impression.
Setting a planters around the doorway can really help to improve you entrance and give it some warmth as well as set the style. What type of flower pot you use will really decide the mood so if it’s classic you want then a Versailles planter would be good but more modern and you want something very simple.
Have a look at the planters and flower pots that frame the doorways I found and see if there is anything you like in there.