"...What can I do to make these two front windows look better?..."

Define what "better" means to you. Why are you concerned with the windows?

That elevation of your house will be dominated by the comparatively huge garage door, which is apparent from your first photo. The photo dramatically illustrates how the size and scale of double garage doors and openings simply is larger and overwhelming anything else on a residence, especially a single-story residence.

So, although you didn't ask, my initial advice would be to either replace the single large garage door with two smaller, and finer detailed doors, or, if you have to have a single large door, choose one which appears to be visually smaller and better proportioned.

To make the rest of the house, and the two windows, look "better" there needs to be sufficient "strength" present to offset the dominance of the garage doors. That may be achieved by removing the two windows and replacing them with a single full height glazing unit, or something like fixed French doors with side lights.

Probably not the advice you were looking for...

Or simply plant several large American Holly Trees adjacent to the garage which can be trimmed as a foundation hedge or as a secure, tall privacy fence. They require minimal watering and grow in a variety of climates. Resists mildew, disease and insects. Even pruning is easy!