Creating Challenger ranked 3's team

I want a chally 3's team b4 the season ends I myself am d2 and i know gold players have chally 3's team Im decently experienced as i have had d1 teams No stupid details about why i should add you just give me a reason, your rank, and your how much experience you have in 3's \

For example : I want to invite my girls in to the 3's team so they can have the icon and border Im d2 solo and have had d1 3's team