Exaggerate Some Poses
Try doing the process that I just described from any poses you feel could be more dynamic. I’ve also included a collection of a few photos with 2 versions of the same pose. One rigid and another more dynamic one. Try exaggerating the rigid ones and check your drawing against the dynamic version.
Keep in mind that there are multiple ways of exaggerating something. If you choose to exaggerate in one way, then check it against the dynamic version and it’s different, that doesn’t mean yours is wrong. They could both be right. You chose to exaggerate it one way and the model chose another way. The dynamic pose is just there as a suggestion. But keep in mind that the model can actually feel the pose. Compare yours to it and see if there’s something you like better in the dynamic photo. Is there something you can learn from it?