Aww emy, I feel so bad for you. Obviously I don't have a dress yet but I totally understand how awful you would feel on your wedding day if you're not feeling your absolute best. If you are really unhappy with the dress then I agree it's best it sell it and start over with a new design, obviously it is still a risk but if you make loads of alterations to the CP dress and still hate it that's just as bad, plus it may affect the resale value.
I honestly and truthfully think you have just become too 'used' to it though and that shopping for your bridesmaids has taken the shine off your own dress. I think it's a stunning dress and won't be upstaged by anyone else. I know it doesn't fit at the moment but maybe it's worth going to a shop and trying it on just to see how you feel in it before you make any decisions.
I honestly and truthfully think you have just become too 'used' to it though and that shopping for your bridesmaids has taken the shine off your own dress. I think it's a stunning dress and won't be upstaged by anyone else. I know it doesn't fit at the moment but maybe it's worth going to a shop and trying it on just to see how you feel in it before you make any decisions.