Plant ideas

Hi,

I don't know much on plants, nor what is really suitable. So I am looking for suggestions to fill this garden. Located in Brisbane.
https://imgur.com/a/b43F68k

Not much space, and close to houses, so no tree's. Id also like to keep clear of deciduous plants of anything that drops an awful lot of leaves/flowers requiring me to rake every week. Natives not necessary.
Height - slightly above fence height is fine. Many meters tall, not so much.

Right now there is two plants planted:
- Blueberry Ash (Pink form)
- Radermachera summerscent

Im also looking at adding one of each of these:
- Coastal rosemary
- Brunfelsia australis


And might use some of these for infill
- Westringia fruiticosa Aussie Box

But I estimate I have about 4-6 spare spots for more.
Any suggestions for a gardening novice?

Thanks.

if you have a dog, don't plant brunfelsia as their seed pods are poisonous.
Does it get full sun, IE. Was the pic taken in the morning?

My tips are;
Casade Lilly Pilly
Resilience Lilly pilly

Plant in a row. Trim it as much or as little as you want. I'd lean toward cascade as their foliage is spectacular all year round.

I'm into small trees so I'd recommend you Plumeria rubra (Frangipani) with beautiful white and yellow flowers! Or Atractocarpus fitzalanii (Brown gardenia) grows up to 7m height!