Hi Monica
Wow! That sounds like a challenging sequence, especially because you're going into a balance on the hands and then straight into chatarunga. What I can recommend is that as you do this flow you do the balances that you are already solid in. Doing balances in a flow like this can set you up for an accident or an injury.
If you want to add balances that you're not quite solid in, then practice those individually until you're able to move into them smoothly and hold them for several breaths. From there start to experiment with starting from squat balance and moving into the new balance. As you get better moving into the balance from squat balance, then continue to work backwards and start with upward salute balance first.
My reason for recommending this is that moving into a balance requires your muscles to activate in a way that keeps you from falling out of the balance. To do this in a flow is very challenging. Look to your bandhas and practice activating all of your bandhas as you balance. This will form a solid foundation for you as you move into any balance that you're wanting to get stronger in.
I hope this helps!
