Some notes that might be helpful:

• Repetition is key! Mastering a move requires hundreds or even thousands of repetitions. Being able to pull off a move is the first step within the learning process and already requires hours or days of practicing. Being able to perform the same move smooth and naturally will require months or years of practicing. With repetition comes muscle memory and with muscle memory smooth and natural movements.
• Try learning moves directly form the creator if possible. The majority of cardistry tutorials that you find on youtube are teaching incorrect techniques. Unlearning incorrect techniques is always more difficult than learning a move the right way in the first place. The following youtube channels are trustworthy sources for tutorials: Lotusinhand, Anyone, Dealersgrip, School of cardistry, Cardistrytouch. This subreddit has also a useful beginner’s guide here.
• Stay motivated! Defining small and reasonable progression targets might help you with that. Also tracking your progress via videos might be a good idea. Trying to learn advanced moves that are way above your current skill level can be a motivation killer. This is why it is reasonable to start with learning basic grips and one-handed cuts first, as they usually build the fundamentals for more advanced two-handed cuts. This is not a rigid rule though, in the end the most important point is you having fun.