After trying to remove a stain on suit jacket I am left with a water mark. Any help or suggestions to solve t?

Carefully cut around the water mark and then stitch in some tartan or other bright coloured material. This will make people think you've just got a cool patchwork jacket. I saw this on Blue Peter in 1978. Give it a go. Good luck.

id suggest washing it most washing machines have a programme suitable for delicates and i myself have washed dry clean only clothes in the machine and they are fine all i do is hang them up and leave to dry in doors

You should have used milk.It's ideal for pen cooking oil etc stains.Try putting

a little on with a sponge.

is it dry clean only? could you wet it all then put on plastic hanger and let hang dry