Need help selling clothes on Poshmark, eBay etc.

I'm looking to hire someone who is able to photograph and list Men's clothing items on PoshMark, or eBay, Mercari, Grailed or a similar reselling site. I have I believe around 50-100 Jeans, hoodies accessories, many still new with tags and some from luxury designer brands and some from more common brands. I'm hoping to sell them quickly, perhaps 5% to 15% below the average market value for similar items. I'm really bad at taking photographs and lighting and quality descriptions of items etc. Also I don't have much of a reputation as a reseller.