Series Of Casting Shadows

I recently received an assignment to take 12 or more photos of one resounding theme/concept. It could be about anything or any idea, just to help me think further into concept photography. 

I realized on my Instagram I take photos of shadows and their abstract designs that they create, calling it my "Untitled" series. Here are the few I've taken on my Instagram.

 

Therefore I decided to take this concept beyond my iPhone with my Rolleiflex to see if I could further capture the feel of these casting shadows while wondering how my medium format camera would make this concept feel. 

Here are the photos I capture within 10 days. All photos taken in Nuremberg, Germany with my Twin Rolleiflex. 

I don't believe there is any deeper meaning to this concept than just enjoying the spontaneity of how shadows form and what light creates.