Thanks for your request. Rather than one single biggest challenge, there are many challenges in getting premium clients—and those challenges change over time. At the start, the challenge for most freelancers is finding any clients at all and building up their experience to move from low-paying clients to premium clients.
The next challenge is discovering where the premium clients can regularly be found, such as industry-specific freelancing platforms, or building up their own website and marketing their services well. For a lot of freelancers, regularly finding the premium clients is the biggest challenge, because there’s a lot of clients out there not willing to pay what the freelancer is worth.
The biggest challenge for me personally is knowing where to pitch my prices to make sure I secure the deal—without knowing what anyone else is pitching to those premium clients. Of course, there are industry-standard rates, but they’re not broken down into experience levels, and they don’t factor our personal skills, so it’s always a guessing game.