cardboard circles confetti dots hole paper punch-out boy cut-out fighter fitness hand karate kata kick kimono man martial motion people person posture power practice punch sensei silhouette backdrop background blank blank page book copyspace creases crumpled desktop education exercise book graphic holes homework kids learn letter lined paper lines margin note book page punch holes render school school book school work scrapbooking spiral spiral notebook student texture vector vertical binding white workbook wrinkled write writing pad writing paper