This took me more than 30 hours to complete as this is only my 3rd day in the world of digital painting. I found this concept of Lamborghini Rat Rod by designers Pawel Wisniewski and Jans Slapins on the Top gear site. Trust me this sketch tested my patience more than a few times as I'm still figuring out the buttons in Artrage 4. I'll be happy to respond to any question you have on how I made this.