Looks decent, just curious why you, and many others, increase the weight with each set? I understand doing a light warm-up set, then hittin the heavies, this works well. If you can do 8 x 27 for your last set, 18lbs is not nearly heavy enough for your first. Looks like a warm-up. You should be close to fatigue with every set besides a warm up. I know you understand the mechanics of muscle breakdown and growth. It is in those last few reps that you are really struggling with, that creates the microtrauma in the muscle, which in turn stimulates growth. This is especially important in women, since it is one of the few factors that stimulate growth, they do not have the hormonal advantages men do.
Your first set should be the heaviest (if you are warmed up), then keep it that heavy if you can, only reduce the weight if you can not make your reps. Think of your target reps as a flexible guidline, rather than a number that must be done.
I think this trend was started with "Zone Training" where they pyramid all thier sets. People are getting good results with this, in my opinion, because they are beginners.
In the end, a subtle change can make a huge difference for you, try this: Warm up with 10 reps of 50-60% 1RM. Then:1 set @32lbs x12; 1 set @ 30lbs x10; 1 set@ 27lbs x 8.
BTW, well done lifting 27lbs on concentration curls. You are strong as hell!