How can I let customers customize clothing on my own Print on Demand store?

[constantinwp]

Hey guys! 

Currently in the process of setting up my Print on Demand store WITH MY OWN printer. 

I've seen many options like Printify or Printful, but my understanding is they also take care of producing and shipping the products. 

Not really interested in the entire solution, since I will be printing the goods myself. 

Any advice on what software or Apps are out there that can help me with allowing clientes to customize goods on my store front? 

[ManfredMuc]

Hi constantinwp, I think what you are looking for is this app https://apps.shopify.com/cai-customizer