two things i see that might of helped with your shot, maybe back off a little to get your subject into focus a bit better, since it is the only subject. And i see a bit of purple fringing at the bottom of the curl.
hmm simple yet interesting. I like the way the O and G are inside one another. It took me moment to catch it however because I kept thinking the bright red bead was intended to be the O. Nice crisp image that is pleasing to look at nice job.