alright dude you might get dissapointed on these if you're using sharpies
marker fades in the sun really quick, and rain makes drippies that can ruin your hard work!
My experiences say that you might want to start working with acryic paint, spray paint (good for backgrounds!) or inks that are labeled for the out-doors (look in fishing section, or ask about them at a hardware store)
It looks like you're using pen, on some of these, so I don't know what will happen to them becuase they make a groove that might protect the lines
good street capable style though, I love it
