Good things. The soil will be warm so permanent things you plant will get off to a good start. Bulbs are coming into the shops.
Bad things, that looks like fairly cruddy soil. You are at the tail end of summer so need to be planning ahead for late autumn, winter and spring.
I would start by loosening up that soil a bit and seeing how it looks. It could probably do with some conditioning so I would get a couple of cheap grow bags , split them open and dig them in. I would also decide how far you want the border to come out and tidy up the edge so that it is well defined, it will look a lot neater! You could define it with a curve of bricks if you have any kicking about. If you bury the short edge of a brick at an angle of 45degrees (up to about half the bricks length) and then put the next brick against it you will get a zig zag effect that looks good on a curve.
It's not the most exciting looking corner, so I would think of putting in a smallish tree to add height and interest. A crab apple could look good there for next year, you get blossom, inedible(mostly) fruit and sometimes autumn colour if you get the right sort. It would be a good time to plant now but keep it well watered. Underneath you can then put some spring bulbs,stick to daffodils and tulips, put them in clumps rather than rows, maybe a couple of hellebores, but they will need extra feeding, and also autumn bulbs like cyclamen . A tree will tend to dry out the soil so to plant under you will need fairly tough stuff that is not too fussy to take you into summer. I would go for geraniums(not pelargoniums but border geraniums) or ornamental grasses could look pretty there too.