Well, amidst all the porn on Gelbooru, there are at least a few useful images...<br/><br/>http://gelbooru.com/index.php?page=post&s=view&id=641 (http://gelbooru.com/index.php?page=post&s=view&id=641)<br/>http://gelbooru.com/index.php?page=post&s=view&id=1100 (http://gelbooru.com/index.php?page=post&s=view&id=1100)<br/>http://gelbooru.com/index.php?page=post&s=view&id=3127 (http://gelbooru.com/index.php?page=post&s=view&id=3127)<br/>http://gelbooru.com/index.php?page=post&s=view&id=1936 (http://gelbooru.com/index.php?page=post&s=view&id=1936)<br/>http://gelbooru.com/index.php?page=post&s=view&id=8768 (http://gelbooru.com/index.php?page=post&s=view&id=8768)<br/><br/>Not too many with realistic proportions, unfortunately.