So, I’ve been playing with my device to see how I want to display it. This is the first one I did:
I didn’t like the black outline, I thought it was distracting, so, I did this one.
The online on it was too light, it was hard to tell that they were books. So, this is the final:
Of the three, this is the one I like best because you can still tell they are books but the outline isn’t distracting.
I think there may be too many books though. According to the the SCA College of Arms Glossary of terms a semy field must have at least 5 of the charge. So, I can definately include fewer books which may make them more recognizable.