Inktober: Why I started a viral drawing challenge

In 2009, Jake Parker wanted to improve his inking skills.

What started out as a challenge for himself turned into a global phenomenon in the artist community.

During the month of October, millions of people post their drawings under the #Inktober.

This video has been optimised for mobile viewing on the BBC News app. The BBC News app is available from the Apple App Store for iPhone and Google Play Store for Android.