I learned a lot from this sketch. Sometimes I get to thinking I can just whip out a sketch so I'll sit down and get going. In this case I started with the right side of the building and the roof overhang and started to build the sketch from there but I got the scale of the barrel wrong and then the building behind was way off and before I knew it I was drawing things that didn't exist. Looking at it now I can't really tell if it's "right" or "wrong" - it just looks like a sketch and if it were more like what it was, that's all it would be. In other words, it helped me lighten up.