Hand Study - Digital Drawing

Here is my new digital art.
Delving into something different this time, I decided to make a the study of a human hand.
The hand look like an ageing man's hand which is a drop down from other part that is resting on his knee.

It looks like the fingers and palm are beginning to wear out as they look tired. You can see other rigorous lines surrounding the hand and scribble was used to depict this process.

The piece was done with AutoDesk sketchbook application and aided with an S-pen. My steps are below:

Thank you.