How to keep a doily from turning into a cone...

[justplaincharlotte]

I finally got brave enough to cast on a doily.

Having had my first attempt at working increases in the round when crocheting turn out as a cone worthy of a scoop of ice cream, and not wanting the same for my knitted doily, does anyone have any tips or tricks to offer other than spreading it out over a gazillion double points and a little bit of looseness in the tension?

Inquiring minds would love to know....