Its good i like the subtlety of it its not to imposeing but gives reference.
You could even go 1 better and do small ones one a part of the helms under the right eye for example.
Sorry for the late reply been away for work for 3 weeks and another 4 still to go
not got any painting done for a month now sad panda is sad :'(
Edit: scrap the under eye idea after looking closer there is so little room it would be next to impossible to do.