Rough layout Exercises - lost world treasure hunts!

using The Acropolis of Athens for this piece of the exercise

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LAYOUT EXERCISES

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this week I am trying to generate different layouts based on the nature references 

(the photo references I got from Mike Reyfman Photography)

Transforming rocks to the buildings - 

was thinking about a treasure hunt concept for this layout 

rough painting, not fully finished with details. The layout is the focus :P

would like to finish more details on the background buildings, but the layout is my focus here 

lighting exercises part II

* these are merely the lighting exercises

* reference photos were from google search, and the original environment photo was provided by John.

Lighting exercises - Interior