Hi Adriana!
Here is our demo link:http://preview.cmsmart.net/demo/wordpress-printshop-website-templates-with-online-design-packages
About your question: If your customers upload the true for your product, it will ready to print
If you have any questions, don't hesitate to contact me via Skype for fast reply: VIncent_4281
Vincent

Helo,

Thank a lot for your comment on our demo quality and YES, you are right on the things we are need to improve

1. Firstly we are using a landing page to link to various demos and I sure that you are thinking the landing page is the actual demo! So that is the reason why you can not see the Online Design working. Here we send you again

http://demo6.cmsmart.net/wordpress/printshop_tshirt/
http://demo6.cmsmart.net/wordpress/printshop_3d/
http://demo6.cmsmart.net/wordpress/printshop_gift/

Here is demo for online design, pls click " DESIGN IT"

http://demo6.cmsmart.net/wordpress/printshop_tshirt/product/test-4/
http://demo6.cmsmart.net/wordpress/printshop_3d/product/design-case-v2/
http://demo6.cmsmart.net/wordpress/printshop_gift/product/tradeshow-bags/

YES we did realize the confusion and planned to improve the landing pages to more clear content and links so you can see the demo clearly

2. We will publish a list of client website working for all Pre-sales client soon.

3. For Documentation, we will publish the USER GUIDER via Slideshare and attached it into the PRODUCT intro pages so you can preview. But this take time to modify our system. But we will do it, for sure

4. We will add more back-end and front-end videos, we just have installation videos now but we will need to add more videos

https://www.youtube.com/watch?v=CbfSyx3ZvP0

5. We also plan to offer a back-end log-in and data reset to all demo. This is has been done for some product but now we will start developing for almost all our product, especially our packages

Please let me know if you have any more suggestion

David

For below questions

"And last question, what type of file does the vendor get in the backend (after customer used the designing tool)?
Can it be already scaled, put on the right template and ready to print?
Or do you still have to do all those steps manually?"'

You can have a clear anwswer here:

https://cmsmart.net/wordpress-plugins/woocommerce-online-product-designer-plugin

This plugin is included in Wordpress Printshop Package

David