This was my first 3D game from scratch, I have come an understanding that level designing is a nightmare in Unity, I am better off making entire environments in blender and importing them onto Unity (I'm sure there are better workflows that I am yet to discover and learn).
Umbrellas, awnings and even passing clouds - that is actually a very good idea. Gamifying real world objects and environment. Yes, I will be working on this game further. In the game, I used a free unity add-on called "Shadow Detect" by GloomyGlowStudio. While I appreciate and acknowledge the powerful add-on that they have made, I'd like to make one from scratch myself.