Suganthi, I thought it will take lesser time if you use two fingers to draw parellel lines simultaneously! May be we need to practise a lot!
It gives athree d effect if seen for longer time!
infact this can be done using three fingers also and as Jayamohan said it will take lesser time if you have practice....
Using double line for kolams has always fascinated me...please teach me the trick to draw this so that it comes out dark too!!
the live demo on drawing double line kolams by Thangamani aunty (Brindha's mother-in-law) was awesome...