Concrete blocks in the front: I would add some kind of draping ground cover to soften the wall. You'll have to build some planters with 2x4. Home Depot in my state cuts wood for me.

Under the window right of the staircase. I would put a trellis with a bouganvilla to fill the blank space underneath. That stuff grows like a weed (in Southern CA anyway). It will add color, texture, and perspective.
Keep it off the wall so it stays crisp white.

Right of the stairs: a dwarf pine tree or a matching trellis could also bring symmetry. It would actually make the staircase look like a trail to the door instead of a "crooked staircase" as you put it.

Your house reminded me of Greece :) look at pictures in the Internet and you'll find great designs.

Good luck!

I would change the outside color (house, walkway, front walls, etc) , and use a few different colors to define the "block-like-looking" sections to give more dimension... Google "Sedona colors" for some inspiration. Once the color is changed...I can see shallow overhanging trellises on the two front windows... And large pots on either side of the stairs with large succulents in each and then smaller succulents (or maybe hanging ones) in planter/pots near the street where your pots are right now.

Sweet place!

Your house has some clues that it might have been originally built with a Spanish style -- like the little round vents above your front window and the stucco texture. If you like Spanish-style cottages (I adore them!), you could consider a paint scheme that plays it up -- think warm earth tones. (An alternative style could be Provencal - think very pale pink stucco with pale green or pale blue door and shutters.) Check around the web for more color combos.

Also -- and most importantly -- you're right about the crooked steps. You should invest there first so no one gets hurt and sues you! The stair risers could be faced with pretty tiles that play off the paint colors you choose. You won't regret fixing those first.

For an inexpensive quick start, how about a tall trellis under the left window, maybe with a vine growing up it? (Wrought iron for Spanish, wood for Provencal.) Eventually you could change windows and trim them out, add window boxes.

Let us know how it goes!

Another idea would be to plant large ornamental grasses on your "blocks". That might soften the whole appeal a little.
I like your stairs. It is different in a good way than the common "front door right at you" look.
Some people would highlight the look, perhaps with some interesting tile on the risers, see photo.can obviously be any outdoor tile you like.

Last thing: a nice house number above the garage would look great. You could potentially paint the underside of your carport?
The backing of your curtains look very beige. You could perhaps change the lining or the blinds...

Don't know your climate but perhaps tall deciduous potted trees on each side of the stairs close to the house. And tall to at least middle of the door. It would soften the hard surfaces quite a bit and help with the scale I think. Alternate: potted bamboo if it grows where you are. It would likely cost less than trees and grows fast. Blow in the breeze. Etc. texture and movement building anything over the carport will be $$$. Can you create an oasis to the right of stairs. How would it feel to create a 'movable patio under the car port? Light eeight folding furniture? Not sure of your garage or parking situation. Or how often, when family config. To be practical

Well reading is a valuable skill: I see you are in CA so bamboo would work. Like others ideas of softer color on exterior....even a vanilla ice cream color would soften the lines.