Virtual assistant for Print on Demand Business

I am looking for a Virtual Assistant for my print on demand business at Merch by Amazon.
You have experience in niche research to filter out the most profitable niches.
You can write the perfect listings to make the products as findable as possible and bring them to the customer without violating Trademake rights? Your English is expressive and you might even have some knowledge of German? Then feel free to apply and send me references or examples.