It's wonderful seeing the smile on a little ones face when they first use a bow ! Great job !
When my kids were using smaller bows like that I would use a single thickness of cardboard with targets of their choice taped to them . ( usually animal targets) the card board is plenty of stopping power for those little bows until they start drawing them to full draw , and allows the arrow to stick in the target . Gives them great satisfaction and keeps them really ,really focused and eager!
Once again , great job !(on the bow and the Fathering)