I love to create 'versions'. I got what I wanted with no. 4 here but have continued to look at ways of making other versions.
It's one of the oft-overlooked benefits of the digital age - the relative ease in which 'versions' of pieces can be created and stored. It used to be that traditional materials dictated that the artist 'nailed their colours to the mast' when creating a new piece but with the tools of today that no longer need be the case. Versions can be tried and tested, colour options run through and even different rendering methods are all available to the illustrator to experiment with. The danger of course is getting lost in the myriad of possibilities. To that end personal work is essential from a creative point of view so the results of successful experiments can later be incorporated into professional jobs. In that way the artist can continue to develop and evolve in a commercial marketplace.