In addition to what I posted in the beginning, it also helps to stretch your torso out if you have trouble getting flow going.
1. Find an area where you can put you can grab onto something above you (door frame, etc..)
2. Use your arms to support your weight from above (kind of like doing pullups)
3. Slowly stretch your lower abdomen, it should feel like you are pushing your butt out while trying to stick the front of your abdomen as far away from your butt as possible
4. If you are still having trouble try the breath technique
You can also try this technique while laying down on your back, it should feel as if you're trying to push your butt into the ground; also you can try this while laying on your belly, it should feel like you are forcing your abdomen into the ground while trying to stick your butt as far as possible into the air. If you try this technique while laying down I suggest starting on a hard surface (floor), so as to get a feel for the mechanics of what you're doing to pelvic floor and sphincter (I find closing my eyes helps to increase my concentration on what my body is doing internally and my makes me pay attention to my breathing as well).
More to come!