I'm a GIMP artist, meaning I only use artwork that already exists online, and simply combine and filter the images to how I want them.
Until recently, I hadn't found any decent renders of Xion, but last night I felt like making a XionXAqua image, and spent about two hours looking for a clearly defined, non-grainy image of Xion.
Basically, until last night, when I made my sig, I had not had the proper materials to make any Xion artwork, despite how badly I wanted to.