worms head isnt in pembs its the gower
i live here and have been everywhere
a good tour would be
"south + west"
amroth
wisemans bridge
tenby
manorbier
barafundle
bosh lilly ponds to broad haven south
green bridge + elegug (guillemot in welsh) stacks at stack rocks (birds have left now)
fresh west
up to dale, watwick bay, mill bay (shipwreck in the sand here)
westdale bay
marloes sands
musselwick (wicked rock curved formation here, get to it from the road to martins haven (skomer boat road) about 8 mins walk from the road along coast path)
martins haven, go up onto wooltack point for a view of skomer + skokholm and grassholm in the far distance if visibility permits, also head down the coast path south from martins haven car park for this view of skomer >>
http://www.talkphotography.co.uk/forums/showthread.php?t=146070 
st brides bay is cool, some good coast walking
little haven (good pub grub, owners are friends) >>
http://www.talkphotography.co.uk/forums/showpost.php?p=1533457&postcount=1
druidston bay is nice
north of broad haven coast path takes on some good views
newgale is a bit bland
"north"
caerfai bay is lovely
porth clais coast walk is good >>
http://www.talkphotography.co.uk/forums/showpost.php?p=1533452&postcount=2
st.justians where the lifeboat launch has some good views, especially of ramsey island
abereiddy bay is nice, especially the "blue lagoon"
porthgain nice harbour'y town
north up the coast from there is abermawr + aberbach nice coast walks + views
aberbach to pwllcrochan is a good walk, some lovely coves and bays - usually seals knocking about on them
up to strumble, again good coast view, usually seals here aswell
dinas head newport + parrog is nice
ceibwr bay is really nice, some cool underwater rock formations, and ripples in cliff rocks
that's about it

- check out geograph for pics of coastal parts you might want to visit >>
http://www.geograph.org.uk/mapbrows...405otjwhabb8Nu4aZVa4&i=0&j=0&recenter=1?91,58
also find out where sunset/sunrise will be >>
http://www.talkphotography.co.uk/forums/showthread.php?t=138641
tides >
http://www.bbc.co.uk/weather/coast/tides/wales.shtml
HTH, any questions just ask
drew