We also have a plain vanilla ranch built in 1950. It was never MCM nor any style. It was just churned out as a tract home. The basic layout of bedrooms and living space was ok, but we opened the wall between the kitchen and living room, extended and moved the kitchen so the old kitchen is half of the new one and partly as our new main level laundry room. The rest of the kitchen is part of the extension and is adjacent to the new den we added on. Due to budget constraints, we only cathedraled the new extensions' ceilings and the master bedroom ceiling was vaulted as we extended there too. Where we did not raise the ceilings we added in skylights and a 5ft eyebrow window in the front of the house, boxed in like a skylight (and we have a skylight over the den up high). The greater amount of natural light is fabulous and it feels so much more spacious with the openings for the skylights and eyebrow window. We had hated the all low ceilings when we moved in. Our previous house had vaulted and cathedral ceilings over the living spaces and it was hard to adjust to low and flat. I truly think that being able to raise the ceilings and/or use skylights is one of the best features about a ranch. Since the house was built with little style and updated with no style either (unless cheap and ugly are styles, lol), we felt free to create our own vibe. We went for retro modern with a 40s feel. What a modern person would have done prior to MCM is how I'd describe it. It has some deco feel to it but the lines are simple and not ornate. Crown moldings would not have worked, so we have done simpler ones. We chose modest looking but well designed materials. No one would ever think it is fancy or frilly. We wanted clean lines but not sharp edges. It is supposed to feel homey and unassuming. Like a well worn pair of jeans that fit well. We want guests to feel at home. If you come up with your own style mission statement you can check your choices against it. At one point, we fell in love with white marble and wanted that for our counters. Then one day, we figured out it went against all our other choices and was too elegant. We ended up with Corian in their Rain Cloud pattern, which mimics the feel of a white marble, but is not trying to fake anyone out. It has a softness to the look but with all straight lines and an eased edge profile, it looks neat. We ended up with Carrera marble in our master bathroom for the counter and in the faux rug part of our floor. That space is meant to be more grown up and fancy since it is our private space and not designed for the kids. The veins that make it great there would have been too busy for the kitchen. If we had gone for another look, I'd have loved to use the marble as I usually drool when I see it used anywhere. If I ever do a kitchen again, I would want qs oak with white marble or some other medium toned stained wood. The door style would be different as well. We are happy with our vision and how the look has turned out (the gc screwed us on condition, but that will be fixed, someday). It is not plain vanilla any more! Our house looks like no other in our area and I dare say, it is now one of a kind. Hopefully, you find your groove and your end result reflects your style and vision, and makes you smile too ;)

Paint the yellow a slate blue. Paint the garage door a bluish gray darker than the siding. That will go a long way toward changing the look of your house. I can't see your door. If the trees are in the way, cut lower branches until your door is visible. It's hard to see from the pic, but it looks like there's a shrub hiding your window. I'd transplant it. The trick to transplanting is to get a lot of the roots and then to water, water, water. You may want to move it in the spring.

Could you add a couple of photos that show a bit more to the property lines left and right so we can see everything currently in the front yard? I would make the garage doors and all the trim around them the same color. You don’t want to be drawing attention in that area. The area around the front door I would make brighter with color and good lighting. The shrub in the lawn looks a bit unkempt and isn’t placed with any apparent logic relating it to anything else in the yard, so I would likely move or remove it. I would want something a couple of feet tall and rounded in the bed of purple groundcover as well as in a pot between the porch and garage.. The walkway and steps look pinched, so widen the steps and make the walkway wider. Change the placement of the walkway a bit to swing out a bit further from the house if you want to place a plant in the ground rather than a pot between the garage and the porch.

The black railing looks good! I think you're right about the front door color. It is too baby blue. I would do a darker blue almost navy. Something like this blue: You could fill in with some more plants and add some on the other side of the walkway. Look for a ornamental tree to put out in the yard.