This image here explores line. Depending on how much pressure you put on your pencil, and how close the patterns you create are, you can produce either dark tones or sensitive tones.
Reflective Study, graphite pencil drawing - Conway High School Art Project
Mark making..this seems simple but also like it could be very effective as an exercise/warm up activity. I think there's a lot of room for creativity in choosing mark designs as well. I like it :)
The pen is a powerful drawing tool. With a quick flick of the wrist, learn to create 9 dynamic pen textures and bring your drawings to life. On Craftsy!
Examples of texture using different mediums (handout)
Basic Pen Strokes 2
축구공 형태 참고
(국외)기존의 흘릴수있는 달걀 수납공간과 달리 전체적으로 달걀을 잡아주는 안정적인 디자인이 맘에들어 선정했습니다.
Natura typeface by Filipe Rolim, via Behance