Just an advice... I´m domain investor since many yeasr too and have many projects running with shops online etc. I know that "pinterest" brings 10 x more traffic to your product than i.e. "instagram" does. That´s just my personal experience, double-checked on google analytics and my shop statistics. So... go for "pinterest" as well, or in first place all along. You can easily upload there your renderings and link them, instagram links won´t be indexed by google, pinterest links will be indexed, as I know.