What you Need: I usually have the following dockable dialogues visible as I work: Toolbox, Brushes,Tool Options and Layers-Gradients. You will need to be able to see these to work through the following steps.
I have assumed that you already know how to resize an image using the drop-down menu under image. Please let me know if you don't, and I will write another post to explain it.
How to Create an Image:Click on the 'File' drop-down at the top of the Gimp workspace.Click on 'New'.Decide on the dimensions of your new image and type them in.Click on the 'Advance' option and increase the number of pixels to 300 dpi. (This is the minimum setting for most on-line art requirements.)Click 'OK'A new image area will appear.Note that you can see a…