I'm trying to find resources that explain the techniques behind pic related. Why are their under drawings so loose and why do so many Japanese artists have such loose under drawings (with the final result looking really solid) or sketches?
>>3122990
It's called exploration.
>>3122990
These aren't really under drawings, just sketches.
But anyway, the secret to using loose under drawings is to draw lots of lines when doing them, and knowing which lines to follow (or when to make a new line) when inking.
Obviously a good grasp of inking techniques is also extremely helpful.