Taking a shortcut is typically the quickest way to get ahead, though what's the point of using the potion in 5-3 to warp to World Seven if you're just going to repeatedly insist on playing as Princess? For God's sake man, she's a girl! For shortcuts to becoming a super (Mario?) artist, get a lesson in DIY Urban Art with Solace Wonder.
Fresh off curating an urban artists' tribute to ironically iconic how to-er Bob Ross, graffiti stylist Solace took a break from creating subtly emotive cartoon-ish character-laced paintings/toys to share some of his tricks to creating sweet art with stuff available at any hardware store/just laying around your house, but good luck explaining to Kato Kaelin why he's green when he wakes up. Two sweet projects you can easily do yourself:
Stenciled Spray Paint On Canvas: Cop some contrasting sprays and then layer them on; start with a dark background, then add speckles (by barely pressing the nozzle so the paint just "spits" out) to add depth, spray through some drywall tape for texture, and finally, use the dark to color in/around a stencil -- in this case a dry leaf -- a state that would certainly have helped his play with the San Diego Chargers.
Acrylics On Household Items: Choose anything -- a lamp, a tissue box, a (surprise!) can of spray paint -- and white out a background, then dab a wet brush at the top of the area to create graffiti-style drips; once it dries (use a hair dryer/oven to speed it up) use color/your own creativity to add a character, or face, which would be Dirk Benedict's first job offer in years.
Repeatedly using these techniques to create a series of pieces is a good way to up the impact, or you can go big and combine them to create more complex paintings like those displayed at Solace's blog, along with his vinyl toys called Hugs & Kisses, which are the kinds of rewards you'd warp all the way to Wart's cloud castle for, if you weren't such a Toad.