You do not give the details of your product, target group, product price,business location, and also you don not mention anything about have you any responsive website, Facebook page, You Tube channel, twitter or not.
advertising campaigns depend on all of it. It is not possible to propose you a exact digital and social media marketing strategy without getting all information.
For effective digital marketing strategy for your T-shirt need research. The result of research will show what initiative need to be taken for digital marketing..
I request you to give me detail of your product, policy and target group. Than i will make a research about your marketing strategy within 48 hour and than give you a proposal.
I am not only working for payment its my passion to give my clients extraordinary support with my own experience, creativity, dignity and brand value..
I am new comer at Freelancer.com but it not means that i know noting. I am working in same field for more than 10 years. please visit my freelancer profile. https://www.freelancer.com/u/Shamsuddoh