To sell your designer shoes for cash, follow these steps:

1. Clean Your Shoes: Ensure your shoes are in the best possible condition by cleaning them thoroughly.

2. Authenticate: Verify the authenticity of your shoes. You may need to provide proof of purchase or use a professional authentication service.

3. Determine Value: Research the resale value of your shoes by checking online marketplaces to see what similar items are selling for.

4. Take Quality Photos: Photograph your shoes from multiple angles, including any areas of wear or special details.

5. Choose a Selling Platform: Select a platform to sell your shoes. Options include online marketplaces like eBay, specialized fashion reseller sites like The RealReal, or local consignment shops.

6. Create a Listing: Write a clear, honest description of your shoes, noting the brand, size, condition, and any original packaging included. Set a competitive price based on your research.

7. Arrange for Payment: If selling online, use a platform that offers secure payment processing. For in-person sales, consider cash transactions or instant payment services like PayPal or Venmo.

8. Ship or Deliver: If shipping, use a service with tracking and insurance. For in-person sales, meet in a safe, public location.