Get tall flowerpot for the corner behind the sofa on outside corner and then two below on the ground
Maybe outdoor curtains pulled back onto out door post (can pull closed ) when you don’t want/aren’t looking for privacy
Plant on inner corner too tall planter or tall green lemon tree something like that
Can you put an outdoor light fixture/fan? Hand string lites from house to post
You need color for sure

Actually do tall lemon tree or other plant on other side of window , on outer part of the porch against the wall too. Need height there of something.

Need a coffee table too yu can put plant or you can get gas fire pit table

I think you could just use your two woven side tables set in front of your sectional as coffee tables as it’s probably easier for guests to reach in front of them for drinks etc. rather than to each side.
If have enough room, get one big and one med sized candle lantern to group together and set on ground beside left side of sectional.
You could also install a larger electric wall lantern on wall by door to replace current one.
Round pot of trailing flowers and greenery set on right side of sectional...add in some white trailing flowers as they always look bright in shadier areas and in the evening. Plant in a citronella plant too in the pot to keep away bugs and it also has a nice citrusy scent.
Possibly stick to a blue, neutrals, cream, and green colour scheme for some outdoor toss cushions. It is a small space and those are already colours surrounding your patio area.
Bring out some cozy throws or blankets for cool evenings.
You could wrap your tall shrubs behind sectional in white outdoor lights. Would be so pretty at night.
Your grass looks like it is a bit lumpy. Work on levelling it and filling in bare spots. It will make that area look fresh and lush.
I would also get a nice hanging planter to hang from ceiling on the left corner by your bbq. Not too low, but something that softens that corner. A heat tolerant variety incase it gets some extra heat wafting wafting upwards from bbq. :)
I love your sectional and the brick wall behind. You have such a cute spot for relaxing and entertaining!

Not sure if you like this, but you could replace your outdoor light fixture with something like this one...a nice simple classic style and inexpensive at Home Depot. I have 3 and they really updated my front of house.

https://www.homedepot.ca/product/bel-air-lighting-oxford-1-light-wall-lantern-in-black/1001103145

This candle lantern style was what I was thinking to set on patio floor beside left side of sectional. Ikea doesn’t seem to have varied sizes of it though. Lots of stores have similar ones.

https://www.ikea.com/ca/en/p/lagrad-lantern-for-candle-indoor-outdoor-black-90372637/?gclid=EAIaIQobChMI_o-quI345wIVFcRkCh2NCQggEAQYAyABEgJPVvD_BwE