There was once a poster contest which resulting in very good output of fish and diamond graphs to promote the existence of TW. I am sure there are people who understand more about graphics in TW if only they could attend the FOSSOGRAPHY event in Phnom Penh, Cambodia due this November 14-17, 2015.
"in November a new event about Free Software graphic tools –
FOSSOGRAPHY. This event plans to bring developer and user of this
software together. Its thought of a kind of showcase about the newest
developments in this areas and what can be done with free software."
http://karl-tux-stadt.de/ktuxs/?p=4766