Hi guys, I´ve actually done the texture of the tree, but when I was starting to render, it´s so heavy then I cant get a good picture. So i have to take a render test with my GPU that I want to know how I can render the tree well

HD_540

HD_1080

 They look the same right? It took 20 minutes to render them. My tree is much more pieces with textures and light, when I render it, the image is just black. I couldn´t see anything.