The key point to remember as you think about how to improve fine motor development in your classroom is to keep it fun. For many students, building hand strength and then applying intense focus to a small task can be frustrating, so keep your fine motor activities short, varied and fun.
In a lesson where you have three independent work stations, consider actively embedding fine motor control as a subsidiary skill in only one of them, and change the task when students repeat the center later in the week. This should be easy to plan out because, as you can see from the various examples above, printable fine motor activities are interchangeable. You can use the same shape templates for playdough one day and cut and paste mosaics another, for example.
Check out some of my best early learning centers to encourage fine motor skills below. You can use many of them to learn literacy or math at the same time!