Hi,
There is a lot of information out there, but just want to check my understanding in terms of approach for my first poster product... I have used Canva for years and intend to use that here... I have an image which I will import into Canva and then resize/scale to 300dpi when exporting, but I'm assuming I don't need to create the exact poster size until I've made my first order? I have an Etsy shop and Shopify... Currently for Shopify I believe its all manual, but for Etsy, do I have to create all the sizes right now or just create the Etsy listing with all the sizes available and then deal with the file upload after order? Any videos on the process?
Thank you!!!