A very good study but truly, these lines are very literal and one has to look gard to find the very few that break up and are therefore implied. Since it is a good image ny vote is based solely on this virtue. 5
The pic is out of focus. I would expect such a 'close-up' to be crisp and sharp.
i'm not sure about the lines as well. They're solid to me, but that is just my opinion.