Thanks for the additional comments here, and to those of you who chose to reply via PM and e-mail.
I'm still relatively new at this, and I value very much any constructive comments or criticism. That should only help me improve.
I'm still very much in the developmental or experimental stage, and have recently been trying to focus on lighting. I'm trying to develop a style I'm happy with which makes appealing use of light and shadows. This experimentation likely accounts for Alex's comments on my strobe positioning.
Personally, I have a general preference for less than fully lit subjects, sort of like images in those old Bogart movies, which I am so fond of. 
Regarding the eye contact of the seahorse, I worked with what the subject would give me. In that specific situation, the only way I would have been able to get the seahorse to face directly into the lens would have meant crossing my own personal comfort level for interacting with the subject, which I wasn't prepared to do. 
Cheers.
Michael.