Referenec here:This was a quick undersketch, and felt a lot more natural than Pinkie's under sketch. I think the trick is to worry and erase less, and just keep on going.I really struggle with keeping my lines light, I tend to press hard with my pencils, even when doing a light sketch. I've had this problem since I started drawing (as I'm sure my old art teacher would tell you if she wasn't such an incredibly sweet woman would would never say anything bad about anyone!)