[spree-user] Custom Products.

Hello everyone, newbie here.

I'm trying to make an extension for spree to allows the customer to
customize their items on product page. It actually allows them to design
their own t-shirt prints etc.

Do I need to associate my main model with Spree::Lineitems model or
Spree::Variants? Which one would be better solution for my problem? And
there'll be some options for each customization, e.g. font type, font color
and some image options, and I'm not sure if I use the Spree::Options for
it, is there another way to do that?

Fatih.

*It's also obvious that I'm not so good at English, so feel free to pm me
if you have no idea what I said.*