Whether scenic or slightly sinister — angry werewolf, anyone? — the designs on the front of “I Voted” stickers are attracting a lot of attention this year. But have you ever considered the back of your Election Day souvenir?Related video above: Fourth graders design ‘I Voted’ stickers in New Hampshire”Garment-safe adhesive, it’s incredibly important,” said Janet Boudreau, one sticker designer. “You can ruin leather, silk, fine wool if you don’t use garment-safe adhesive on any sticker that goes on fabric.”Boudreau should know. She designed the iconic sticker that has been a polling place staple for decades: a simple ellipse featuring a rippling red, white and blue American flag. And while the company she once owned now has competition, she is delighted by the new versions cropping up around the country, many of them designed by children.”I am all for it,” she said. “And I’m all for younger people getting involved …