Small business owner advice

Hey all, I’m not sure if I should post this here; but I am looking for some advice.

I have decided to start my own little business designing & creating custom made t-shirts, mugs, face masks & bags- possibly other apparel in the future.

I want to ask to get some advice or ideas- what would be some things you would like to see if you were shopping on my website? What type of style are you into? Colors?

I am just exploring what outside people would like to see when shopping on an online website.