Here is a Hydro Man panel I recently made. I took pics that show the process. 1. First I made a full size pattern and drew the picture on the cardboard. The picture should be as simple as possible. Plan in your mind how you will roll each line. You don't want them too close together or crossing over each other. 2. The material I use is 3003 H14, .050 thick. I always order it with PVC coating on one side. This protects the panel while you lay it out and make it. Then you peel it off when you are done. Without the coating you would end up with a scratched up mess. I comes white or clear like the sheet seen here. 3. First I cut the panel to size adding enough around the edges to fold under later. Using a sharpie marker I added the first line that will be rolled. To get even curves you can just grab anything round. Here I grabbed a sanding pad, I often use pain cans. 4. To transfer the rest of the picture I cut out some of it as shown and clamped the pattern to the panel. I like to keep the pattern for possible later use and also, there is always a chance you can wreck the panel during the rolling process and have to start over. That is why I don't just draw the picture on the panel from the start.