Carol - J H has lots of very good points.

I did a w/e close-quarters-handling course with Southern Sailing on a long keeler a good few years ago and the following points still stick in my mind:

to go slowly spend as much time in neutral as possible, but never stop

understand prop walk

practice in clear water (neaps or slack and little wind ) with a buoy as a marker

lots of fenders both sides

tide is often stronger than the wind

don't necessarily use a lot of tiller in reverse - we ended up doing a figure of eight ( in reverse !) - the boat would only do this one way - and by experiment we found that , say, 35 degrees of tiller would do this . More or less and it was a disaster.

Practice, practice practice - easier said than done.....

good luck