Finally I was able to set my first online store in Redbubble. You can use your own design with many different products (clothes, home accessories, beddings, phone cover etc..). The visitors are then able to see and eventually buy the object by you created .
As a try I decided to use the symbol of my lovely homeland, Sicily. Overall the concept is very interesting but the profit on average is very low. Anyway I really enjoyed make such experiment with this web service and it is very easy to receive the payment from the people’s purcrases (using paypal for example).