I had fun making this one. I really haven't practices using other tools in Inkscape beyond the pen, brush and eraser. I now think I understand where the pencil and warp tools come into play. Sketching with the pencil was a million times easier than with the brush as I used to do. Even though the brush can do some interesting effects, it's just not as controllable. while the warp tool I always thought was way too out of control to be useful. Turns out with the right settings it's quite good.