Pictures of my posture to critique

Thank you so much Esther!  ;
I will start following your reccomendations right away!  

I have been going through the 8 steps book for a few weeks now, and I think I finally have stretchsitting, stretchlying and inner corset down pretty well now.  I made my own kind of DIY verson of your stretchsit cushion for my car, and it is working well.  
I do have a couple of questions for you:  

1.  Since I do have a sway in my lower back, how much do I need to worry about tipping my pelvis?  I do make sure that I don't activly tuck it, but do I need to worry about anteverting it more, or is it already tipped enough?

2.  Its kind of hard for me to figure out how to not sway my lower back, while simultaneously keeping my shoulders rolled back.  For instance, if I "tip" my ribcage forward (kind of like you say to do when you are lengthening your torso for stretchsitting), I feel like the sway in my back is less, but then I am rounded forward! :(  How do I find a balance here?

3.  Is there anything else I can do to help with lengthening my neck, besides the things (like pulling at a clump of hair at the base of your scalp, or pressing up against an imaginary object on the crown of your head) shown in the book?

4.  Regarding mobilization of the thorasic area, I read a post on Marksdailyapple.com that had  couple exercizes for this--the one I've been using so far is the tennis ball one...I plan to get a foam roller and try that other one, too.  When I am doing the tennis ball exercize, my neck tends to get tired really quickly from trying to hold it straight...does this just mean I need to strengthen my neck muscles?
http://www.marksdailyapple.com/how-to-improve-thoracic-spine-mobility
Do these exercizes sound like a good idea to you?

Thanks again for the help and words of encouragement! :)

Awesome, you answered all of my questions perfectly! That post you linked to is exactly what I need to do--what type of a yoga bolster are you talking about, though?  Could you post a link to a picture of one?

When doing the thoracic spine exercizes, I did try with my fingers interlaced behind my head and that did feel more natural--glad to know that is the right way!  Do you reccomend that I wait a bit before trying those again?  I wouldn't want to do something bad to myself by doing them too soon!

Thanks again for your quick and informative replies!!!  ;

Thank you for the tip about the yoga bolster--I will give your office a call! I think I will hold off on the thoracic spine exercizes, then, because I do not want to increase the curve there!   :-

So far I have been doing well with my stretchsitting, lengthening my neck, using my inner corset and rolling my shoulders back frequently throughout the day! I have been working on side stretchlying for a while now, and I am finally able to fall asleep in the correct position  :D ...one question on that, though:  

For the arm that you are laying on, is it best to have it up under the pillow like you show in the 8 steps book?  I typically have slept with that arm sort of curled next to my body, with my hand curled under my chin--is this bad?  I am starting to get used to sleeping with my arm up like you show, but it doesn't quite feel natural yet.

And one question on the inner corset:  is it typical to have to frequently re-engage it at first?  I've got the feel of which muscles I need to use pretty well I think (when I do inner corset I feel the long muscles up the sides of my abdomen, the upper ab muscles and rib anchor muscles working) but I find myself accidently "letting go" of them every so often.  When this happens I usually just make sure I am finding the right muscles and re-engage them...is this the right thing to do?

P.S.  Lately, I have noticed a kind of achy pain in my thoracic spine area that comes and goes--what do you think is causing this?  I have been following all of the things from the 8 steps book to the best of my ability, and also focusing on the areas you mentioned, for the past few days.