Hey james. I love the rendering on that first robot, and the lines on the potted plant are WONDERFUL. Try mixing those techniques and you'll have an awesomely drawn and rendered finished piece. A couple of crits. On the plant, i see straight lines - usually organic shapes don't have those. Also, you might you might want to watch your line weight a little when working with pen - play around with thickness to get more dynamic lighting even without value. Keep it up!