Rhyming sestina

I've just completed my first and possibly last rhyming sestina.
When I say finished, I mean I've finally battered it into some kind of shape that I'm reasonably pleased with. I shall need to do some tinkering before I submit it anywhere.
Possibly more crossword puzzle than poetry, the problem with any sestina is how to avoid making the six end words, repeated seven times, not seem repetitious. Punning is quite acceptable, apparently!
I suppose the trick of the sestina is to write the final three lines first, using words that can have different meanings. Not that I'm an expert by any means.
One word of warning, the rhyming sestina has a slightly different sequence to the unrhymed sestina. Mixing the two up can lead to six months to one year in jail, whichever you prefer.