Today I feature my friend Paul Wang's sketchbook #23, an accordion sketchbook. Check out his blog and Flickr page for more sketches.

A reader asked me this question, so here's the video response to that. Having a larger number of colours means you can mix an even larger number of colours, but it will be challenging if you use so many colours in a painting. Usually, I use around 5 colours, so I don't really bring my big watercolour boxes out.

Yesterday's sketchwalk was at Marina Bay. Over the last few months, Urban Sketchers Singapore has worked with SG HEART MAP to organise several sketchwalks around Singapore. Finally, all the sketches from the public are displayed at the exhibition yesterday at the exhibition on The Float. I'm surprised by the quality of work and also the many names that I do not recognise.

Here's the video of the exhibition and part of the sketchwalk.

Watch more urban sketching videos on my Youtube channel.

David Kassan is just insanely good