Here are two wildly different sorts of trees . I am sure you know that's an oak on the left and birch on the right. There are many different trees out there, where you live (particularly you guys in Malaysia and Australia) have a whole different set than we do here in New England. I am no expert on botany, although I know what most of the trees I see are, I observe their differences as an artist at a level useful to me. I am pointing out things to look for that are hopefully common to wherever you are working.
Different trees throw their branches at their own preferred angle. The oak, for instance on the left, above, sends its branches out at a right angle to the trunk, the oak is a hardwood and extremely stout and strong. Look at this close up of the branch leaving its trunk.
Those enormous branches are cantilevered out into space, there is also a buttress on the trunk, a swelling beneath the branch to help carry its massive weight. The smaller limbs and even the twigs of the tree look to some extent like this too. It is sort of that trees personal "style" or habit. Below is a close up of the branches of a birch.
This is a different habit, The branches fork. They do it at pretty much the same angle, but it is a different angle than the oak. Again that angle is repeated all over the tree from its largest branches to the smallest and into the twigs.
So there is a formula, a mathematical angle that a tree will usually install into its branches. That angle which the tree prefers, differs from specie to specie but each sort of tree has one. Below is an old maple that has a different sort of habit.
This maple likes to send its branches out in a rounded elbow shape. They come out from the trunk and then turn upwards in a gradual curve. To draw these trees it is good to observe how they hold their branches and then characterize it a little. Show that you know it, and then express it to the viewer. Just a little, don't lecture, but show em how your tree works.