Has anyone ever made one? I made one of High Rock Lake and Lake Norman but they are only two layers with no depth contours or points of interest around the lake. I want to make one of the Chippewa Flowage in Hayward, WI for a family member when we go up this summer. I haven't found any in depth videos on how to actually make the layers, only the one like I made. Any thoughts or directions for in depth instructions?