Traditional and Digital art

The main techniques are the same in traditional and digital : 

Sketching
Layers
Brushes (Mark making)
Colour pallet
Measuring
Scale(zoom)


Differences :


 non-linear process
ability to undo and redo
Saving/Restarting
Physical piece
textures

Both traditional and digital arts are using the same art concepts, such as balance, color theory, harmony and contrast. However, digital arts is a natural extension of traditional arts due to the digital evolution in human civilization.