Instructions
Approach the stage to face the Slobber. Before starting the fight, run around the field and pick up items to refill paint and thinner if you're running low.
Watch for the Slobber to raise its paw, and then jump away before it strikes you. The Slobber will also spit thinner at you; run away to avoid it.
Wait for the Slobber to start inhaling. The monster will try to suck you into its mouth.
Face the Slobber while it's inhaling, and then spray either thinner or paint into its mouth to injure it. Repeat this until you defeat the Slobber.
Open the treasure chest that appears to claim a reward. You'll also earn the TV Sketch.
Aim the Wii remote cursor at the TV power pad, and then press "-" to use the TV Sketch. If you drop the TV Sketch in the wrong spot, talk to the gremlin, Mr. Rover, to get another one.
Head down the hall and jump into the projector screen to leave this area and go to Plutopia.