Speed paint in sketch club (ipad)

I made this one in one hour on my ipad. I like the loose feel and the limited palette. I use my wacom bamboo for almost all my drawings and paintings, and though I like very much the feel of the pen, the rubber nibs are rubbish, they break easily (like in a week or so). I hope wacom will listen to its customers and fix the nibs ASAP, but I don’t have high hopes about it.