how to get a work placement in a firm like adidas for a work placement when you dont have any diploma but you are able to create things that they do

its all about attitude and weaseling your way in. in the end your work speaks for itself. however your degree or lack of is what either gets you in the door or locks you out. If your work is good enough get your self in the same building as their design staff is, sort mail, answer phones whatever. once your in start networking make friends with the designers art directors and especaily their support staff then move in for the kill. Your work really needs to be solid, I mean really solid. you can do it
best of luck