I agree with Julie,
Do you have a photo of your space?
What is the style of the rest of your house decor?
Do you have any other colours in your room in cushions or other furniture you would like to incorporate?
When you say dark brick, does that mean a red brick or a brown brick?
Large clocks or large Artwork can really compliment a space, just make sure they are hung at eye level (so when you stand and look at it, the centre of the piece should be at the same height as your eyes).
Would love to see a photo of your room so we can give you more direction that will suit your style and space!

Thankyou for the suggestions and I have included some photos

Before you think about what you can add to your space, may I make some suggestions for room configuration first?
I have attached four possible layouts to make the space feel more inviting as you enter.
The first image moves the TV onto the right wall, instead of being cramped next to the heater. The three seater couch is moved a little higher into the room, to be facing the TV. While there is less walking space between couches, I feel that this arrangement promotes opportunities to gather, communicate, use the fireplace and watch tv. However, the TV unit will be the first thing your eye is drawn towards as you enter the room.
The second image (which I think will work for your space the most) puts the tv unit on the far left wall. Your three seater is then moved opposite, and your two seater is moved on an angle, to create a usable seating area that can use both the TV and Fireplace at the same time. Now the first thing your eye is drawn towards are your couches when you walk in the door.
The third image uses the same layout as your current configuration, however you are bringing your two seater forward into the room more (so it’s not squashed against your sideboard)
I couldn’t see from your photos whether the TV unit will fit flat against your wall? Where possible it is better to have the unit flat, and the TV moved on an angle for viewing, rather than having the whole unit on an angle.
The fourth image shows your current layout, but again, brings the couches closer together in the space.
My vote is for layout two or one, over layout three or four for your space.
Hope this helps!
I will post decor inspiration soon!

For your back wall, I would add three large frames, and rearrange the things on your shelf to look like this:
Turn tissue box length ways and move the bowl closer. (If possible find a timber tissue box holder?)
Lean three artworks against the wall.
Move the rattan balls closer to your candlesticks.
It looks like you might have the beginnings of tropical style? Based on your decor in the room. So bringing in greenery to your space in your artwork and furnishings might work to unify this space.

For your consideration...

Hanging artwork directly above the couch helps to tie everything together.

Then placing a large print on the left of your fireplace and a trailing plant (for when the heater is not in use) will further tie the place together.

I would also add a large pot plant on the right of the heater

Fab ideas Charissa.

If tropical isn’t your design style, that’s ok too, the placement of furniture, cushions and artwork would be the same for a different style approach.

What colours do you love? Is there a design style you particularly like?

Use colours from your artwork to influence your choice of cushions and throws for the couches.

Good luck!

Thankyou so much Charissa I do really like option one. Is it ok if the tv is partially in front of a sliding door if we put it flat against the far left wall. I really like the artwork colours in our first pictures I am not really into tropical so if you have any alternative decor suggestions would be much appreciated. Love your ideas

Here is some inspiration for a blue, white and gold theme...
(If you have preferred colours let us know and we can run with that!)
As Julie said, art is such a personal taste. It’s about bringing the main colour of whichever artwork you choose and using those colours in your cushions and decor items.

Some artwork options...

The only problem having a tv partially in front of a glass door is the glare you get through the door without a curtain of sorts behind it to stop the light.
While it can be done, I’m not sure it should be, lol.
Where on the left wall is the sliding door? (It’s not clear from the original photos where it is)
Happy to help!

Or green artwork that’s not tropical...

Cont...
If you do a search for the colour and style of artwork you are after (eg. abstract, realism, photography, landscape etc) you should be able to find some great inspiration.