Anxiety responds well to stabilizing, calming yoga practices.
Diaphragmatic breath is the most important step in healing.
Makarasana / crocodile pose is a great way to settle the senses and let them turn inward. It can be helpful to use at the beginning of a class or practice or at a transition point in the day like returning from work.
Standing poses are good to build confidence and ground energy through the feet. Move energy with active poses and by stepping (not jumping) deliberately into the poses.
Synchronize the breath with the movements as you move into and out of the poses. Work with the smoothness and continuous movement of the breath and body together. Ujjayi breath can be helpful.
To counteract the wide open quality of anxiety, keep the gaze focused a bit down and close in. An example would be to focus on the elbow during Warrior 2 instead of gazing off over the hand into the distance.
Seated, forward bends are beneficial to help focus turn inward and settle the outward direction of anxious energy. If that feels uncomfortable, start with the other poses and work up to them.
Work with inverted poses to balance the endocrine system and the emotions.
Restorative poses with long holds can feel good near the end of the practice once some of the restless energy has been released. Supported shavasana practices that open the chest and breathing are beneficial.