nice photograph ! ( i love the mood, its like a hitchcock film still

)
how did you meter the scene ?
i ask because sometimes in camera light meters are "off" ...
so it
seems like the right exposure
but it isn't ... and sometimes people use
reflected metering instead of straight up ambient light meter reading and their exposures are a little off too...
if i can suggest doing a film test for your next roll with that camera...
bracket your exposures all by 1 full f-stop
so lets say your light meter says 60thS at f 8 ... expose 3 frames one at f8, one at f 5.6 and one at f 11
do this for the whole roll, and then see which frames are easier for you to print. it will make your life a lot easier
than dealing with thin negatives ( im guessing your film is sort of thin )
this bracket test is probably the first thing anyone should do when using a film / developer/ a camera they aren't used to using ....
or sending film to a lab ... if any 1 of these things ( exposure, developer camera, lab ) is "off" it can foul up hte whole process ...
have fun !
john
ps if you haven't seen this
http://www.fredparker.com/ultexp1.htm
not to use instead of your in camera or in phone or hand held light meter
( well, maybe, i haven't used a meter in 10 years )
but just to make sure your mechanical meter makes sense...