product designers, accessories and jewlery designers

Here is my idea: I want a designer looking like " Supreme" where you have a basic design, but can play with it with DIY options. Not any common DIY you see on the market, but like laser tag or on collar itself. Customers can purchase pendants separately to go with the basic collar, it is kind of like how " Pandora" design their product. The idea of this design is to increase buyers retention of buying accessories for their dogs. My purpose is to make the collar unique and easy for buyers to put pendant on by themself. It can be changed easily. e.g. LV has the basic pattern " Monogram" which went viral. They made changes based on monogram pattern, such as painting or changing colors and so forth. My target customers are young people that like to take instagram pictures and love decorating their dogs. This is just an initial idea. I need to put it into real product. Please see the below website for reference.