Just took these photos at East Coast Park.
As an ambidextrous caricaturist, I do caricature drawing since 1990 in Singapore. Einstien from Norway is the pioneer caricaturist with certain years before me, then follow by Eric Ng, Saik, Poon Ee Way whose were my senior. Chong Jit Leong, which known having shop at Yishun area doing full time portrait and caricature around that time as well if not wrong. Not much people doing caricature for events fringe art during that period. Nowadays, more than 22 active caricaturists in the industry.
Based on this scenario, if one person queuing for 2 family members, you are going to draw 30 persons even though there are only 10 persons in the queue. That is the unexpected circumstances you need to handle. 
Other than doing rainbow calligraphy, he also read the fortune of your name while he doing the rainbow calligraphy during event.
Hmm..I don’t think he got a website, but you can call him direct at his mobile: 9067 8295