How are you? Many themes (particularly the ones from Shopify) have built-in order notes features. You can enable this by going to customize themes > Cart > Go to Cart page > and then enable cart notes.
This note section will be located on the cart page (before they checkout the order). It's perfect if the customer has special instructions or if you require them to enter a text for customization. I hope this helps.
By the way, are you looking for high-quality products for your dropshipping store? You Should try Spocket. It's a dropshipping app that allows you to sell high-quality products from our suppliers located around the world. We have suppliers based in major countries like the US, UK, Canada, and Australia.
You can sign up for a free Spocket account and browse our catalogs of products. We also provide a 14-day free trial on our paid subscription to help you get started with selling. You can also check our success stories on some of our retailers.