You are truly talented, and your models are beautiful! However, it seems like you have a limited number of models right now. To get your first sale, it's important to focus on increasing the number of models you have available. The more diverse and attractive works you add, the more likely you are to catch attention and appear in search results.
Keep improving your work, and by adding more models to your portfolio, you'll notice an increase in your chances of making a sale over time.