I'm always excited to see others giving sketchnotes a try, even if they feel their drawing abilities are not "hang it in the gallery" quality, because it's about the thinking and not the drawing.
Case in point, these lovely sketchnotes by Matthew Lang from Scottish Ruby Conference. I love that Matthew is exploring the use of emphasized typography and drawing in these notes. I can tell that he's having fun. Great work Matthew!
If you're not an artist type, don't let that stop you from capturing sketchnotes with the skills you do have. You'd be surprised at how deeply rooted your visual sense is.
I give you the permission to sketchnote.