I am trying to get a better handle on my sketching for strengthening my portfolio. Could anyone give me some suggestions on ways to improve? I have taken traditional drawing classes but am entirely self taught when it comes to using pens and the industrial design product sketching style. So far I've just been watching tutorials. My goal is to build up a certain level of skill so that if I pursue a masters degree I will be at a level with my sketching so that I can stand with my peers in at least one more area. I may possibly start a new thread in this forum to post daily or multiple times a week drawings but I have not decided yet.