Hi Mark ... Just wanted to Thank You again for allowing me to join your birthday celebrations last Saturday.
It was a brilliant day and it was especially wonderful to meet your lovely wife ... they say behind every great man is an even greater woman :-) ... and all the other great people attending.
I apologise that I did not seize the wonderful opportunity you presented to me, to demonstrate and teach something of the arts that I love ... I had been strangely feeling a bit under the weather all week and on the day I was in some pain from a recurring back problem.
You are a down to earth genuine guy and I am grateful that we have got to know each other.

Please say hello to your wife.

I look forward to seeing you soon,
Sifu George :-)