Using Photoshop filter to improve your drawing....links to Tutorials on Cut Out/ Halftone and Gaussian Blur

http://www.imagemagick.org/discourse-server/viewtopic.php?f=1&t=5274

Remember that pixlr editor is similar to Photoshop and is available for free online at pixlr.com.  You can open your photos in pixlr from your Picasa Web/Google + album.

link to PPT on how to use the Cut out filter on adobe Photoshop

Link using the Halftone filter on Pixlr.com to create poster effect


Using Gaussian Blur to Add Depth of Field to a Photograph


http://www.cgways.com/photoshop/photoshop-color-improvements-to-gaussian-blur


Link to PPT on how to use Guassian blur on Photoshop