An image from 2006, originally done in CorelDraw and Corel PhotoPaint. I will sound heretical as a professional graphic artist but I believe that the Corel "creative suite" is just as good and in some ways better than the Adobe Illustrator/Photoshop "creative suite." But since Photoshop CS3 etc. is the industry standard and universally considered so, I use it instead of the Corel set.
This is the sketch for a painting I did in acrylic and watercolor. Geometrics look great done digitally, but people still like something made by hand the old fashioned way.