Opera ain't over till the fat lady sings - The.
More ways of killing a cat than choking it with cream - There are.
Many hands make light work.
Hear all, see all, say nowt, tak' all, keep all, gie nowt, and if tha ever does owt for nowt do it for thysen.
Accidents will happen (in the best-regulated families)..
Where there's a will there's a way.
Forewarned is forearmed Link to proverb.

While there's life there's hope.
Little of what you fancy does you good - A.
All things come to those that wait Link to proverb.
Waste not want not.
First things first.
Make haste slowly.
'tis better to have loved and lost, than never to have loved at all Link to proverb.