I've been so inspired by lace bib dresses that I've been trying to crochet freestyle doilies. Even though I'm not a very good crocheter. I always skip stitches and overlook them so my finished piece has a ton of increases and decreases and resembles an hourglass. But that's besides the point.
This is how I made my practice doily. It's a half doily, but at the end I'll tell you how to make a circle one. I used US 10 knitting needles and crochet hook w/ DK weight yarn.
CO 10 sts. Knit till it's 2." Now cut the yarn and thread through the stitches. Pull it so that the piece makes a half-circle shape. Tie off. Now I just crocheted around the border with different stitches and patterns (freestyle).
First I single and double crocheted around. Then, to make an eyelet row, I chained 2, skipped 2 sts, and hdc into the 2nd stitch. I did that all around. When I was done, I single crocheted a row.
To make the scalloped border, I chained 3, skipped 3 sts, and dc into the 3rd stitch. I did that all around. Turn work. Now, in each scallop, sc, hdc, dc, hdc, and sc. If you've ever crocheted a flower, then you'll know how to do this.
If you want a circle doily, CO more stitches at the beginning, pull the yarn through the stitches tightly, and sew the two ends together.
If you don't understand what I'm talking about, find a crochet flower tutorial and maybe you'll get it. Or find someone who knows what they're talking about. Good luck!