Issue with shadows/lighting on my new object mesh

Hi I've been working on this big circus tent mesh for a while. I'm almost there with it I think, but I'v

Shadows Babylon.js Documentation

Realtime shadows may be killing your Unity3D performance. Here's one way to fix it.

Shadows - My Shadows do not show in the Editor view or Game View. – Unity

Dome Light - V-Ray for 3ds Max - Global Site

How soften hard edges - Questions - three.js forum

texturing - Anyone can explain why light passes through the object? - Blender Stack Exchange

Troubleshooting Lumen-related issues in Unreal Engine

Lighting and Shadow - On Stage Lighting

Mesh Light - V-Ray for SketchUp - Global Site

How to create a shadow in Blender - Quora

How to bake lighting onto object to show in game?

blender internal render engine - Wrong shadow on the mesh? (bl nodes) - Blender Stack Exchange

ArtStation - Tutorial - Disabling obsolete shadow casters in Unreal

Light and Shadow

Issue with shadows - Unity Forum