"There's still time to write something"
After three weeks of working on int I can call it finished.
All done in Blender 3D, with some parts sculpted and textured in ZBrush. That tree is called "Ipê Amarelo" and it is known as the national symbol in Brazil.
Cycles 2500 samples.
That was the first time I tried to apply color theory in Blender and it wasn't so hard. I had to adjust all the textures and shaders for the palette I chose. The lighting was not a big problem too.