Hi , I could help you with listing process. I could help you design your store from better, with better thumbnail images for product while listing. key word title according to trends of the category and proper description (can include refund, shipping policy ,cancellation policies etc.,)
Requires minimum of 3 photos of every products for listing.
I just need a clarification - your mentioning ( Cosmetics and Home Decor) these are categories. how many products are we talking about listing?