I almost thought I better not touch it after your comments Antonio. Lucky Daiviet brought me back down to earth
You may be right about the size of the tree Daiviet. Even though I didn't have a larger one for the left that would suit I am unsure if this would fix it. Maybe as they all grow in size it will improve as Antonio suggests
forrest4.jpg
This shows the top of the main two trees coming left with their combined angle being almost vertical in line with the rest. Closing the angle slightly is also a possibility. The tree behind this would follow in relation. They would also come further forward in the pot.
The two trees on the left indicated would be swapped as the front tree is just too straight. The slight bends in the tree to take the front will better harmonise with the two main right trees. The very straight tree will improve the very vertical effect from the back ground.
With this I think there should be a couple more trees on the left with one possibly coupling with another tree to increase the illusion of size. I will also add some very small undergrowth scraggly trees and rocks later I hope to have this end up on white tray with a river bed through the middle. A penjing landscape.
I almost cut that root to the left of the two main trees Antonio. I was after the effect of this tree coming from under the main tree and with this root removed it will show this better. I have left there for now but will see in the future. I still want those two trees to have no gap at the bottom.
It should be plenty of fun to play with through the years

Edit: I usually find the wide flat trays handle the heat ok. I will add some spag moss if it is drying out too quick.
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It's too bad your in such a hurry cause the stories I could tell you, Bushels and baskets of stories, hole crates full of stories. But if you can spare a moment I will tell you one story.