Exploring shadow effects from the book Lettera 1 by Armin Haab & Alex Stocker. It’s a book you can’t find in the library anymore and it’s full of great examples and ideas.
As my research continues I am still in a search for my personal style in designing, exploring different ways and approaches.
In case you wondered how to create a long shadow effect in photoshop I came across this article showing all the steps: http://design.tutsplus.com/tutorials/4-ways-to-create-long-shadow-effects-in-photoshop–psd-30308