Hi, so are you getting used to your hair length and hair cut? My hair is very similar to yours.. it's about 3-4 inches below the middle of my back but its probably just as thick as yours. So of course when it's cut, it seems more fluffy because longer hair weighs it down. I like the layers on your new do..
I don't know if your hair gets frizzy but mines does because of the hot weather... I like to curl it using remington twisters... It defrizzes your hair and gives your hair a nice curl.
So i think it was a good change for you... I know it takes sometime getting used to, but there are more styles w/ shorter hair than w/ longer hair... Sometimes my hair comes to to a point where I would just get it braided or put it in buns and pony tails. When it's a little shorter, i can still do all of that and more... it give you more options.
Your hair looks nice shorter (but still long)... It's a nice change and of course, you can always count on it growing back.