How to do a Spring Watercolor Tutorial: Explore Holland's Beautiful Tulips. Let’s make a spring watercolor tutorial to explore Holland’s beautiful tulips on its own or as part of a study on Holland. Also, look at my page 4 Weeks Free Spring Unit Study & Best Hands-on Ideas. You could do your watercolor on any size paper you like. But since we are using tulips as an activity for a Holland unit study, how fun would it be to create a series of postcards for different countries?