Try doing a slightly wider squat. You can also point your feet outward—this helps support the pelvis, and can be helpful for women at any stage of their pregnancy.
When it comes to drawing, only practice really makes it easier, so pick up your pencils and at first just try to get the basic shape shown up to Step...
You could use a reference, and then draw basic shapes like circles or triangles to start forming the overall picture of Articuno. You can add in the details after.