Was that done from scratch using just a pencil, eraser and paper? Or was it a few clicks on a computer? See THAT'S a difference in art. Comes in many forms, some easier than others. Even your little mock up is classed as digital art. It's the effort and ability in creating or recreating that people appreciate mostly, not the ability to buy a program to do it for you. Good effort though.
An example of digital art I would say, for what I know?
I enjoyed visiting your FB page Gloucester - really unfortunate that all the nastiness had to creep into this thread. My 13 yr old daughter is currently drawing similar art works from photos - she is quite good too - right now she is on family members.
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