Overall they arent bad for a first attempt (I'm assuming you werent being paid and these were for freinds or family)
#1 shes a pretty enough girl , but the pose is awkward and the background sucks - you also seem to have some issues with whites over exposing (this is true of the full set - it looks to me like you lit it with direct flash - next time try bouncing it off the ceiling , or use a diffuser
#2 again with the overexposed whites with loss of detail , and also the background issuer - the bride has a door frame growing out of her head
#3 it was a good idea and you've done well not to get yourself in shot n- hopwever i'd suggest a fairly radical crop to square removing much of the oof brides back, and the burnt white arround the wall light
#4 yet again with the whites and the lost detail in the dress - also the grooms button hole has gone wonky - dont be afraid to put things like that right when posing shots
#5 the brides expression leaves a lot to be desired here - it looks like she was speaking when the shot was taken - also a bit more care with backgrounds would have avoided the blown out transit van at top right - personally i think i'd have posed them against the shrubbery you can see on the left hand side
#6 The ring shot works okay - but i'd suggest a much tighter crop to eliminate some of the bright dead space
#7 the cake figurines is another okay shot - although it ideally needed more dof to keep the groom figurine sharp - i'd also suggest a crop to portrait to remove the unnecessary and distracting background at the left hand side
and #8 I can see what you were going for but it hasnt really worked as there are too many different elements an no one central point to draw the eye - maybe a macro shot of just the bouquet would have been better.
Over all as i said not a bad first attempt , but things to concentrate on improving going forward are
a) Posing and backgrounds - on the posing side it is critical that the couple are comfortable with you and that you are happy giving clear direction - wedding photography is as much about people skills as taking the shots - and poses should look natural and easy not posed or false
Backgrounds need to be neutral and free of distracting elements - easier said than done I know - but that is why a pre recce of the venue etc is ideal
b) exposure - my suspicion here is that the culprits are either direct flash (next time difuse or bounce it as discussed earlier) and/or the post processing to create the B&W - its important to check the histogram and make sure you arent clipping the right hand side.
HTH
but all is IMHO, and hopefully will at least give you some food for thought. 
