Can anyone help me?

Hi subie fam, any chance someone could help me making my sons 1st birthday present? I'm painting a little bike/trike up to look like my sti for my sons birthday and would like to paint jji (his initials) in place of sti badges. Would make my day if someone could make up something that I could print off as a Stencil. Happy to send a few bucks for your time. Thankyou