Actually I think these are okay for all seasons. The shine in the eyes is heart shaped which is what makes them Valentines. They are blank on the inside for a personal note.
Cut them apart, then score and fold on center line. Line it up in a 2 inch circle punch so the folded edge doesn't quite meet the edges of the punch, then punch through both layers, or fold it in half and cut around the edge of the circle. I use a Uchida circle punch and had no problems getting through both layers.
Download the PDF HERE.