Print and cut out the silhouette templates on plain white paper. Depending on the size you want, you may need to print on multiple pages.
Tape the template to the black poster paper. Trace with marker and cut along the edges. Download and print the template>>
Measure the size of your windows and cut wax paper to fit each panel (optional). Stick it along the window frame. Download and print the template>>
Use double-sided tape to attach the silhouette to wax paper or directly to your window glass. Download and print the template>>
For the owl on the tree, cut the silhouette so they look like jagged branches. Let the tree take up about a third of the window. Download and print the template>>