Yes, rake the needles (and gravel) onto the path, before improving the soil, and periodically during the off-season for the flowering plants. They tend to restrict growth and do not add to the appearance of the foliage or flowers, don't you agree? Not sure what does well in your area, but here's a list to take to your garden center that might brighten your day, and cover the ground. Cotoneaster dammeri, Juniperus conferta 'Blue Pacific", Euonymus fortunei 'Coloratus", Asperula odorata, Dianthus gratianopolitanus "Bath's Pink", Adiantum pedatum, Ophiopogon japonicus, Parthenocissus tricuspidata or quinquefolia (I forget which one climbs up the trees, but get the other one), Most of the above will do well in any pH soil, so don't be afraid to sweeten it, if advised to locally. I would not plant all these together, but you have plenty of room to match up good companions in each area. Some, like the junipers like a little more sun to make you smile. That should get you started in covering the ground. The local folks will be eager to sweeten the list, I am sure. Enjoy the process. Involve your family and friends. Nobody does it alone.

After staring at your pics a few times I think I've figured out what's bothering me. The garden bed sticks forward. If you need it for the size of plants in the ground it might work but if you're only going to have pots you can line the edge up with the wall of the house I think? What is the depth of the garden bed? Colour and placement of the pots. The pots look terracotta and the brickwork looks more reddish, is that right? It doesn't look like it goes together. Maybe you can use those pots somewhere else where they aren't right beside the brickwork and get some pots for that location which are either darker and match the trims of the house or are lighter and contrast with the house more. I think the pots need to somehow relate to the windows. If that room could use some privacy or shade you could put two pots in front of the windows. If you want to preserve the view out then you could put three pots against the brickwork. The mulch. It looks too low for the edging. (What is the edging?) The colour, like with the pots, doesn't look like it goes with the rest. I'd go black pebbles or something light in a similar hue to the stone foundation feature. Or maybe scoria?

I love Irene's photos and the suggestion to build a wall inside the boundary to square off the front angle, with plantings in front of it. This would be a brave move (I would probably get a landscape designer in for this if you go this way). Otherwise (I haven't read the previous comments, apologies in case I repeat or contradict), I would plant a fuller medium sized tree in the front right side (the deepest part), though centred, not in the point itself! Something like a full Manchurian Pear (though be committed to pruning it to keep it from growing too large, they don't grow too fast, it should be manageable - otherwise try a pretty Snow Pear (my favourite!) or a Bradford for a more compact but pretty shape - you can even pleach (ie take off the lower branches to keep the first metre of trunk nice and bare for a more sculptural look), or if you want something that will keep more compact without too much trouble, a beautiful crepe myrtle (Ilove the white Natchez variety) makes a lovely sculptural feature tree. You can underplant this with a square garden bed with star jasmine (just keep it trimmed to shape) and they look amazing with some under lighting at night (easy DIY kits available these days). Then along the right fence line I would add plantings to keep it private and looking lovely, again I would go Chanticleer ornamental pear (or Capital are even more narrow but I don't love them, though they're very popular). Again you can underplant with hardy, quick growing and low maintenance star jasmine. Then along the driveway on the right side, plant something lower and along the left side (if you have soil here), plant Sweet Viburnum (I love this, we've planted the Dense Fence variety), again, quick growing, beautiful foliage and low maintenance.

Hi , Love oklouise ‘s suggestions, a row of ornamental pears along fence would add a modern look, viburnum ‘emerald lustre ‘ underplanted as a hedge, it has a fabulous foliage , ornamental grasses combined with structural plants would look great, a water feature with a feature tree in smaller garden area would just finish the garden beautifully and really highlight your driveway.