Hi Helen it was simple to do - the instructions were NOT to dig the soil because it brings weed seeds up but just to hoe it, then wait for the next load of weeds to arrive then hoe again - I did mine 3 times.
Then the seed was broadcast by hand just so there was no formality to it. I thought i had messed the seed bit up but it looks ok to me.
If i can collect some seeds and add new for next year & see what happens - just try to get it done earlier..