Here is my very first rough drawing done in photoshop. It is part of the salamander project I'm working on. (The frog will be the nemesis of one of the salamanders)I drew the bullfrog in pencil first, and scanned it in. Then "painted" it, with several different brushes on different layers.Used varying amounts of transparency to get more vibrant colors. The gradient is on the bottom layer. Originally I was going to leave it on white, but the background color really makes it pop.
