For the Mystery TAL, I decided to continue on with the same colour. So far I have done split chains and a split ring to move up to the next round. I finally ran out of thread in my shuttle but luckily I had enough to finish Round 4 :).
Doh! I just realised I made a mistake in Round 4 all the way around! Will continue and hope the mistake will not affect the overall look of the doily.