The one thing worth knowing before you buy a wall outdoor light is that the bulb inside needs to be rated for outdoor use, not just the fixture. I learned this the hard way when a perfectly good looking light I'd picked up filled with condensation after one rainy month and the bulb died inside two weeks. The housing was fine. The bulb wasn't. Check the fixture is rated IP44 at minimum for anywhere with a bit of shelter, and IP65 if it's taking direct weather, and match the bulb to it, not just the socket size.
Getting the scale right matters more outside than in, because there's nothing around it to soften a bad call. A general rule is to mount the light so the center sits around five and a half to six feet from the ground, roughly eye level, and to pick a fixture that's about a quarter to a third the height of the door or window frame it's sitting beside. Too small and it reads like an afterthought bolted on. Too large and it looms over the doorway like it's trying to light a parking lot. Measure the wall space you've actually got, including how close it sits to the door frame or any trim, before you fall for a shape online that turns out to dwarf the spot you had in mind.
Where it goes wrong is mixing styles on the same wall or the same run of exterior. A sleek black cylinder next to a fussy lantern style porch light looks like two different houses arguing with each other, and cheap finishes show that argument fast, the coating flaking or going chalky within a season while a better powder coated or solid metal fixture just weathers quietly and looks better for it. Keep the finish consistent with your door hardware or house numbers if you've got them, that's the detail that makes the front of a house look considered rather than assembled in a hurry from different aisles.
What it sits well with is anything plain and sturdy around it, a simple house number plate, a doormat that isn't trying too hard, a pot of something green by the step rather than anything fussy. It doesn't need company to look finished, one good light either side of a door does more than a cluster of decoration ever will.
This kind of light suits an ordinary house with a door people actually use every day, not a showpiece entrance.