Holly, you are exceptionally talented and quite skilled. I think that working in acrylics will hold back your great potential.
I worked in acrylics for many years (in fact Step by Step Graphics Magazine did a big step by step article on my procedure). I was very stubborn and insisted that the medium was at least as good as oils.
Then one day I saw the light. When I encountered my first original Bouguereau painting, I saw the incredible subtlety he was able to achieve. I went home put all my acrylics into a box and then went out and bought oils. Even though I had never used oils before the first time I used them I was able to cut my painting time in HALF. Oils are much easier to use and far more flexible than acrylics. I don't want to post a painting of mine on your critique page but if you're interested in seeing one of my acrylic illustrations here's a link to one posted on my web site.
http://www.fineartportrait.com/mtv_plughead.html