Niche Research Tutorial For Print on Demand Using Amazon and Pretty Merch Pro Plus 

I have a few videos on how to create vintage looks and on birthday designs. There are so many vintage birthday designs out there. I can try and do another video on one of them.

I use frames and put tie dye photos in them. You can create custom frames. I have a video on how to do that using word.

I don't think so because it is an extension to the Amazon Merch Sellers Page. If you are selling on other platforms, you may want a research tool specific to that platform. You could use merch dominator, it covers Amazon, Etsy and I think soon to be redbubble. I have a link. merchdominator.com/pricing?ref=mge0yzc

I don't personally sell on zazzle but it's likely the same rules to niche research apply.

haha Not everyone will get the Born thing