Don't be discouraged if your first few attempts don't turn out as expected. Like any hobby, papercraft requires practice, and you'll improve with time.
Apply a tiny bead of glue to the flap. Press the mating piece against it. Hold for 15 seconds. If you see glue squeeze out, you used too much (wipe with a damp q-tip). papercraft anime templates
Fold these lines forward (toward you), known as a Valley Fold . Don't be discouraged if your first few attempts