Low Poly Tree (Aquarium usage)

Hello! I made a tree in blender before exporting it as an STL file and 3D printing it. Being new to blender, the model may have some flaws but its a work in progress!

I made this as during these times of lockdown, local fish shops (LFS) are not open and I wanted to buy drift wood. So I thought to myself, why not 3D print one! And here is what i have made! :) The idea was to make a tree with branches so I can tie moss on the branches such that it grows into an underwater tree (I was going for that concept)

Being new to blender, I'm still working my way around of how to scale objects. If you have any tips to drop me a message I would be more than glad to hear your thoughts! :) The original STL of the tree has a height of about 130mm and a build area of approximately 70mm x 70mm.

Hope this would be useful to those out there who faced the same problem as me :)

P.S. I would be posting updated photos of the tree covered in moss soon! ;)

Cheers and enjoy!