Please choose the correct solution to the question: How to decorate homemade stickers with children.

Solution1: Rather than printing full color stickers, just print the black outlines, and let your children use markers to fill in the stickers with the colors they choose.

Solution2: Rather than printing full color stickers, just print the black outlines, and let your children use glue to fill in the stickers with the colors they choose.

Answer format: solution1/solution2
Answer: solution1