For Odoo Online

I'm looking to offer designs for print products, and a printing service (i.e. business cards, flyers). I am wondering what the best way to do this is. I was planning to create products in my store for each product, and I can add attributes to allow customers to add free-text.

For example, for business cards, it will include an attribute for the Contact Name for the business card. The customer can then input the name.

I am mainly wanting to know if there is an app I could use, or a way to allow customers to bypass these attribute "questions" and instead upload a front and/or back design directly to the product while they check out.

Any help or guidance would be greatly appreciated!