Graphing Designs

You can graph your own designs using the graph paper below.

I'm using 50 gram crochet thread with a US9/1.25 MM hook, which works well for me for a 3 double crochet grid.

Right click the graph paper on the left and save it.
Open the graph paper in your drawing software.
Save it with another name before you start your design work. That way you will always have the graph paper.
Use the fill tool with red as the foreground color, white as the background color. That way it will be easy to correct design mistakes as you go. If you decide you want a filled square blank again, just click with the background color.
Save frequently as so go.