What photos make good subjects for digital art?

A first I  drew with Microsoft Paint Program.I did cats,apples and abstracts


I found Microsoft Paint by accident.I had not heard of, knew nothing  such things.I spent about a year and a half playing with it  especially when I had a few months of illness.I  made some abstracts and then a great many cat pictures.It made me realize it o.k to simplify.to do so;you have no choice with Paint And that what I really like drawing is two objects in relation like two cats or apples.I tried three cats as well.It has that advantage... you discover what you personally like to draw.Ideally I'd prefer watercolor or pastels but I had no class I could manage then,





 



What will happen?

Naive art!

This is the family of three... a child has arrived



 Moving on from Paint,I discovered Artweaver and Paint.Net both free.I experimented and found for transforming a photo  it's good to use  photographss with  strong shapes and pattern  like trees,cracks in the pavement,gates,fencing,certain buildings,climbing shrubs  on a wall.....natural patterns

A tree trunk



Cracks in our pavement down the  end of the  street



Cracks in the pavement.It looks better in color



Here I used Paint to add birdlike shapes to the  previous image

The top image below is from a photo of a mosquito  bite on my thigh after I scratched it so there was a little blood



From my trees collection





What not to use.. don't use photos with a large area in one color...even if it looks ok as a photograph

The light here is a problem for using this in digital art... but it's intriguing as it is

I found ignorance quite helpful in a way as I had no expectations.....which is very important I believe.