Utopia 4-1 is the first level of Utopia.
It's can be hard for some for three stars.
The best strategy for Utopia level 4-1 is to get a bit lucky with your shot. It seems like a one-bird clear is the only way to get three stars on this level, so try messing around with your angles to find a good shot. The best luck came by going through the bottom and top left pigs, then ricocheting into the top-right pig.