Scale & Proportion

Exaggeration Scale- When small objects, or subjects, are magnified, appearing bigger than they usually are.

Snake. 2008. DeviantArt. Web. 16 Nov. 2012.
<http://o0-pangea-0o.deviantart.com/gallery/?catpath=/&offset=120#/d184eeo>

As you can see, a snake usually does not appear that large, but because of the exaggerated scale, it is.

Hierarchic scaling- The size of the figure determine importance.

Lazcano, Ignacio B. The King. 2010. DeviantArt. Web. 16 Nov. 2012.
<http://neisbeis.deviantart.com/gallery/?offset=72#/d2x3fw4>.

As you can see above, the Kingly figure in the middle is slightly larger than the other figures around him, drawing your eyes to him first.

Surrealism- An artistic style that stressed a subconscious approach, often resulting in images that cannot be explained.

Avilés, Daniel. Digital surrealism. 2011. DeviantArt. Web. 16 Nov. 2012.
<http://artmus.deviantart.com/gallery/#/d39hpux>

This image cannot be explained and seems to be in a strange alien world. Thus surrealism.