Thanks for this very helpful course Widhi. You have done a great job making this simple and very useful. Your work and accomplishments are very inspiring to developing artists wanting to learn ArchVIz. I hope you will have more 3ds Max Archviz courses online soon!
Here are a couple of my renders. You can see I changed a few things. I did all the modeling in 3ds Max and then exported to Cinema 4D because I already have a license of Corona there. Some of the workflows are different so this was a great opportunity to learn more about this excellent render engine. I used an HDRI for the sky lighting as well as a sun with the same angle to add more pop. I also added a light portal material to a polygon the size of the window.