From the GG Forum Guidelines...
10. When posting critiques, be firm, be professional, be polite--use tact. Distasteful, nasty, belittling posts will not be tolerated. The "Golden Rule" applies here, "Do unto others as you would have them do unto you." When critiquing, don't just provide problems, provide solutions and sound advice along with any references. Improvement comes from constructive criticism, not destructive criticism.
When critiquing, or being critical of someone's work, you must post an IMAGE of your work as a courtesy to the person being critiqued..
This is why you should post an image along with a critique on GG.
Chip