ArtStudio is one of the most comprehensive, sketching, painting and photo editing tool in the App Store and is hugely popular with many mobile photographers. In this example image below by James Clarke you can see the potential of this app. Check out What’s New in this update below. This is a free update, if you have previously downloaded this app. If not, you can download it here. It retails for $2.99/£1.99.     What’s New? Copyright Image – James Clarke – ‘If Kandinsky Had An iPad, Number 4′ – Apps used – ArtStudio, Decim8, Tiny Planets, ImageBlender, Camera+, Juxtaposer, TouchRetouch     – added possibility to reorder tools in…