Lilley, I'll be honest with you for a moment.
You spoke your piece, and within it, some good advice. Certainly the way you ride affects your horse. That's a fine piece of constructive criticism.
The rest of your post - was completely unnecessary. Children say whatever pops into their head. Adults choose their words carefully and speak with eloquence. Your post displayed neither. If you'd like to preach on being a "big girl," I'd suggest reviewing your word choice a bit more carefully before allowing it to fall from your mouth. Ricci is right in saying that your "honesty" won't get you far. You stated that you can control what you say and choose not to do so. That's called being rude. Best of luck in your life, I do hope you choose your words a bit more carefully in your next attempt to be honest with someone.
Nordic - I agree with Ricci about the impulsion, but it's clear that, like you said, he's lacking some muscle. It is my guess that once he regains some butt/back muscle, he'll be more inclined to work from his hind end, move out, and collect for you. Good luck with him - I would suggesst hill work if you have any hills about. :]