Another tip for you.
1. Duplicate the render once.
2. Move the duplicate under the render.
3. Apply a 4.9 Gaussian Blur to the duplicate.
4. Duplicate the Gaussian Blur layer.
5. Move the Gaussian Blur duplicate above the render.
6. Set the Gaussian Blur under the render to Soft Light/Hard Light, whichever works for you.
7. Set the Gaussian Blur above the render to Overlay.
This will add more depth and better contrast to your render. There are plenty more things you can do but this is the easiest and most helpful thing for beginners.