I started to look at the lighting today, and can’t seem to find too many good tutorials on how to light an environment realistic. I found on what the lights are, and basic use. I decided to try out some Tekniks, the shadows are black on the opposite side of the light. I did have one directional light in the scene. By adding two more and placing them on the other side with no shadow and low light the textures in the shadow start to show and adjusting that the light started to look much better. I drew an example of before and after to explain.
Anon, Introduction to Unity 5. Available at: https://app.pluralsight.com/player?course=introduction-unity-5-2046&author=joshua-kinney&name=introduction-unity-5-2046-m2&clip=9&mode=live [Accessed February 23, 2018].