Announcement (Patreon)

Soon ill reach 15k followers & in celebration i want to show my appreciation to all of you , i want to give 4 free commission 2 for my X followers & 2 for my patreon followers i want to pick randomly in lottery type but i have not figured it out yet how ill do it any ideas ? I Do not know what or how to do this yet like what is the mechanic how may i pick i personally want to make you guys participle in it