There is a link for the PDF template to make these lovely cards/invitations. You could easily do these for a 21st invite for a young man by removing the rose & change the colour to suit the occasion. They'd make lovely Deb invites too.
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Kids Craft: DIY Father's Day Card
I HEART CRAFTY THINGS: Kids Craft: DIY Father's Day Card
Crafty Lumberjacks : Cards for Dad!
Easy handmade Father's Day Card. Cute washi tape idea for a handmade card.
paper craft ideas for kids, fathers day cards
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despicable me minion father's day cards | minion card