Some previous crosshatching stuff I thought I should upload. Hatching and crosshatching examples:
[Click on image view full-sized: redirects to Flickr]
Practicing basic crosshatching:
[Click on image view full-sized: redirects to Flickr]
A few more examples of cross hatching. Try to re-create the image on the left side!
[Click on image view full-sized: redirects to Flickr]