This is my personal design that I've perfected recently. The size is 25mm x 30mm x 1.5 mm which is the size I prefer based on how I hold my picks. It allows me to do pinch harmonics without shifting the position of the pick in my picking hand; rather by changing how I strike the string. It has three different edges for use if desired, though I only use the primary edge. I've generated three different versions. One with flat edges, one with a rounded edge, and one with a beveled edge. I take care of truly beveling the edges through sanding with 180 grit and 300 grit sandpapers. Generating a larger, smaller, or thinner pick can easily be taken care of in your slicer should you chose to manipulate the dimensions. Enjoy!