I, too, have quite a large chest, and am a big lady. However, this has not stopped my practice, and it will be 10 years strong pretty soon.
Some thoughts on the compression poses…
Having a bra that allows you to move, or jiggle boobs out of the way (uniboob can’t help you here) in many postures was a great epiphany for me. Working your core strength so that the more you can suck in your stomach (and lay your chest on it pretty much) is a great help. And lastly, letting your chin tuck come down a shade lower, and letting some of the “v” between your chest open up allows breath.
On the discussion of rabbit…
I used to have s stellar rabbit! But time marches on, and I’m 35 now, not 25, with some injuries, etc. Today my instructor said, “Experiment! Play with it! Maybe open up the feet a little bit and see where that gets you – fake it til you make it, that’s what He always says”! And you know what? It worked.
So wiggle around, don’t get discouraged, play with some boat poses, and see what happens.
Its just life, not heaven. You don’t have to be perfect.
~Katie