Hi Ospreyfan and David
Your fear of heights does get better
. My first Munro, Ben Vane was nerve-wracking (felt dizzy, etc.), but now I only really get scared at sheer drop, too exposed scarey bits.
I found walking with friends helped when I first started hillwalking - chatting is a good distraction, and at times, a helping hand from a mate is all it takes to coax you across or up a bit you're not so keen on.