I guess no one is going to be surprised that the tree screams out to me for limbing up. But now it's a predicament. The branching structure is such that limbing it up like it ought to be would disfigure it all the way to the top, because the major upper limbs begin very low on the trunk. (This should be a general reminder to people to pay attention to the branching structure while the tree is young and as it grows, and not think all the trimming work can be successfully done at the end. It can't.) Hard to tell exactly how close the tree is to the house, but its position (as well as its structure) is not flattering to the house. I'd consider removing it on account of that. If removal is not an option, then remove 4-6 lower limbs and improve it somewhat. Actually, trees off of the corners of the house would be much more useful and flattering. For the time being, I'll ignore the existing tree and go with a scheme more like this.

I would scrap the idea of outlining edges with single rows of shrubs and groundcover. While a common solution, it often ends up in the house looking like it's smothered. If shrubs are trimmed in balls, it ends up looking contrived. If you intend to use the patio for seating, I don't think a hedge of Liriope is going to give you comfort. Instead, you might put some larger shrubs, but farther away, not at the edge. Fill the gap with low groundcover which would extend to surrounding the patio. Trim the shrub height to match your exposure comfort level. At the house, a single dome shaped shrub below the window (it's a matter of creating the shape with trimming) would look friendlier than a box shaped hedge. Use a solid perennial bed surrounding the corner and annuals near the steps. At the left side, it doesn't look like there's room for a shrub below the window so I'd go with a window box and at the ground do just a solid bed of Liriope or something similar

I like blues with brick. I would also paint your garage doors so they don’t stand out so much. And a big house like that needs deeper flower beds. And a big tree!

Take a current picture from closer in and format it the whole thing is picture, not 2/3 black. We can't really tell what you have. Azaleas generally don't like full sun. I'd dig them up this Spring and put them somewhere they get no more than 1/2 day of sun.