To get the carrots you need to add points to each crop, to get the sheep you need to break the ice. I haven't quite figured out the purpose of suns and Strawberries. But when you match +5 you do get extra points, so maybe that's it. You only get the ones on the board, so its up to you if you remove them all or not. Break the ice as soon as you can, so that you can move the sheep and then make rows to get carrots falling, and higher values on them. Shovels help with that.