Popsugar Family Martha Stewart How to Make Sunprints Summer Makes an Imprint All Year Long With These Nature Sunprints August 4, 2014 by Rebecca Gruber View On One Page Photo 4 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 4 Step 3: Wait! After about five minutes (or up to 20, if it's overcast), the silhouette will be apparent. Source: Jennifer Causey Previous Next Start Slideshow Martha StewartLittle KidsKid ActivitiesKid Crafts