The oysters are trapping the fireflies at the bottom of the board and 2 of the fireflies are trapping the bull. Get the oysters opened and away asap so that you can get the fireflies lit. Once the bull is free move him up to the first poppy, down and back up. if you can or move him left and up. Watch the board so that you can get the bull moved at the right time if the crops let you, use shovels to set up the bull.