I like your taupe paint with the brick and would keep that and add black and/or charcoal gray for a monochrome color scheme.

New light fixtures.

Natural wood front door.

Widen the planting bed next to the walk.

Black wrought iron but move the numbers off it.

Landscaping and a bit of color, would do a lot for the exterior curb appeal. Its a cute house, but, it looks like someone forgot to dress it up. A couple of small flowering type trees in the front yard, would also help. Oh, and please, none of those ugly rounded ball type shrubs, in your landscaping.

I am so pleased!

Brown garage door might also work for you.

I would say 4" white wall mount numbers in a simple font...centered on the window height.

White or white wash brick with painted balck windows is an easy fix that would modernize right away. A fun light blue paint for the front door could work nicely as well with that updated pallet. Always add greenery, either larger potted plants/trees for imitate effect, or slower growing shrubs for a longer term solution

New doors, replace or wrap the wrought iron post, get rid of the planter or cover it with a piece of stone, interesting landscaping.