Im usually always playing like a 6-8 year old boy but I decided I wanna take a try at the older role

I really like that gender/age combination especially with an older teenage brother as I think it's a really cool dynamic so does anybody who's good (At least a paragraph preferably more) want to try a RP playing like a boy in that age range? I prefer when diapers come gradually either due to accidents or something else but I'm up for any ideas. I think I'm pretty good so shoot me a message