Hi. I am new to bonsai growing and training, so any advice will be greatly appreciated. I am working on the pomegranate in the pictures. The branches at the top part of tree are very healthy and growth is dense, whereas the lower part of tree is very sparse. One side at the bottom (hopefully you can see that in the second photo) has no branches. What is the best way to encourage growth of new branches at the lower part of tree? Is it too late?
Thank you

First thing to do is take the wire off. The plant is very young and needs a much bigger pot to get some growth into it. Hard pruning may encourage backbudding but lower branches on this kind of plant are not needed.

In addition to what m5eaygeoff wrote: bonsai are NOT created by keeping young trees small.

Thank you both. I guess in the spring I can transplant to a bigger pot and wait for the tree to get bigger and stronger before pruning back