Thickness can help define a line ~with strength~!
No but seriously, variation of line thicknesses will help increase appeal and keep your eyes more interested.
Here's an example I pulled off Pinterest:
![[IMG]](proxy.php?image=https%3A%2F%2Fs-media-cache-ak0.pinimg.com%2F736x%2F47%2F63%2F59%2F476359b04d7e792e070280075674504b.jpg&hash=f484941e8f7a4a52f0cf3c7783899ade)
Thicker lines can be used to create a focal point while thin faded lines can be used to create the illusion of depth.
I apologize that I can only think of a car as an example, but I used to draw cars a lot so I picked up a lot of drawing techniques from design sketching and rendering.
![[IMG]](proxy.php?image=http%3A%2F%2Fwww.designertechniques.com%2Fimages%2Ftutorials%2FMikaelLegnegard01%2Flugnegard-10.jpg&hash=93058c813959fe171237867822936ea1)
http://www.designertechniques.com/tutorials/mikaellugnegardtraditionalrendering01-page1.htm
I used to follow this tutorial before. Give her a read if you have a chance.
Last edited: Jun 22, 2015