Any yarn weight will work. I have made them with doily yarn to super chunky.
Use hook size appropriate for yarn.
Gauge is not important.
Leave a 6 inch tail and make a slip stitch.
Chain 51, dc in the 5th ch from hook, *Ch 1, Sk 1 ch, dc, ch1, dc in next st*. Repeat to the end of the ch. Ch 2, turn
5dc in the first ch sp in the previous row. Sc in the next ch sp. *6 dc in the next ch sp. Sc between the next 2 dc*. Repeat to the end. Finish off leaving a 6 inch tail.
Now here is the fun part!
Starting with the end of your lace strip that you just finished, roll up the strip like a burrito. Use the long tails to sew through the base to hold flower shape.
Want to make a smaller rose? Make your starter chain 35.