Setting your rates as a freelancer can be scary at first. Imposter-syndrone is real, my friend.
You might find yourself thinking "who am I to charge someone for X" or "I'm not good enough to charge that much". Let me just say this – you are good enough, and you deserve to get paid what you're worth. It's an ongoing process to value your time and energy but it's worth it to continue working on this skill as you go. It's taken me years to fully believe that.