I have relaxed into tatting the border, not seeking perfection - which I will never find anyway - and am just trying to tat the best I can, not being too picky... I only want to finish it. It will be a long time before I tackle another hankie! I have tatted one too many borders, I think.
Just over half tatted.
I tried out this tip I found somewhere online in a video. Someone was talking about filling in that annoying space between the elements where the chain and the rings are difficult to pull together, like when you tat a cloverleaf followed by a chain...
It does work!