Welcome to the Guild Nji! Well you have come to the right place to develop those artistic skills. There are some really good tutorials for GIMP in the Tutorials section so that ought to be your first stop. Once you have gone through a tutorial and would like to begin, create a WIP page to show early pics of your project. Be sure to ask for feedback. This is a good way to pick up new tricks and tips of the craft. Here's wishing you success in your quest.