academic aged antique backdrop background blue college college-ruled design education free gray grey grunge grunged grunginess grungy hole holes image line linear lines magenta note notes old page paper photo photograph picture red resource retro rule ruled rules scholar school sheet somadjinn stationery stock template texture textured vintage white blank book business copy copyspace dez pain exercise book graphic illustration kids learn letter lined paper list margin message notebook office pad pattern render scrapbooking shopping striped student vector workbook write writing writing paper xymonau