Combining street skate fashion with lol

Hello guys, We are 3 young students in Groningen ,Netherlands, and are big fans of League, study, skateboarding and fashion. We had an idea of maybe making some designs featuring little lol features which would not be obvious but players would notice and hopefully appreciate. We are not looking for profit, it would be awesome for us to combine our two biggest passions. Now my question is simply if it would be possible due to copyrights infringements. We could also just send u designs and u do whatever you would like with them :)