PT really came together for me when I worked it with an Iyengar-style instructor. Getting the alignment spot on and breaking down the pose into parts made this previously precarious posture suddenly much more accessible to me - and maybe it could do the same for you! So if you're game, grab a yoga mat, a block (a thick book will do), warm up with a few rounds of sun salutations, and get your om on!
Start with the foundation: your feet! From standing, take a step back with one leg (start with the left leg, usually, but we'll have the right leg back in this case so it matches the photos!). Place your back heel on the mat and turn the toes in so they angle forwards as much as possible.
Now, check your alignment. While some people say that the heel of the front foot should line up with the arch of your back foot, I prefer to have the heels in line at a minimum. Now try to square your hips towards the front. If you can't comfortably do this, walk the forward foot outwards a bit to give yourself a bit more room.
Done? Bring your left hand to your waist and stretch the right arm up. Take 3 breaths here, extending the spine from the waistline up.
Now take a forward bend, grounding through the back heel and lengthening the spine to slowly bring the right hand to the floor inside or outside the right foot. If you can't reach, use a block as shown a few pictures below. Stay here for 3 breaths. Make sure to keep a slight bend in the left knee so as not to overextend the hamstring.
After 3 breaths, bring your left palm to your lower back. Begin to rotate the torso, lifting the left elbow up to the sky and eventually looking up over your left shoulder. Now breathe, and maintain the length in your spine by drawing your chin away from your chest while strongly extending through the back heel.
Et voila! For all purposes of alignment, you're already in the pose! Breathe here, lengthening and twisting. Push the floor or the block away with your right hand and if you want to add a bit of flourish, extend the left arm straight up towards the cieling, finding the full expression of parvritta trikonasana.
What are your experiences with this pose? Teachers, how do you include parvritta trikonasana in your sequencing?