Using blanket stitch to make lacy trims for hankies

Hi everyone,
After stitching on the hanky with the alternate chained blanket stitch, I kept it aside for a while trying to think of something nice and pretty in the middle.My first option were the tiny roses, and I stitched them on another cloth simply to try it once. But somehow , it ended up as a trial only.

Then I mulled the option of monogram..but discarded the idea again.The hanky lay abandoned for a few days and all the while I was wondering how to deck 'her' up.

Then came the idea of lace crochet trims. Why not try them? It was a while since I crocheted and my dc-s (double crochet) and tc-s( triple crochet) were rusty.But when I started piercing the hanky with the hook to make base ,I realized that this method was creating holes at the edges and the fabric was rather delicate to withstand this attack. Thus ended the first attempt.But I was hell bent on crocheting the edges - somehow a base had to be made. That's when the dear old blanket stitch came to the rescue :)

Click on the pics for a better view. In the above pic,on the left ,you can see the holes created in the fabric after my first attempt.

I stitched around the entire hanky with evenly spaced blanket stitches using perle cotton and then...I dc-ed around exactly once and stopped the whole business there.
Are you thinking? - she did all this to crochet just one round??? Heh,heh....that's me :)
To tell the truth, I did try going around couple more times,but it looked awful,probably because of my special crochet skills :) or may be the thread was just not good enough{wink}

At the end of it, I was over the moon at having laced up my hanky,but I had lost interest in finishing the embroidery part and so I lazy daisied and ended it. But the question remains, how does one directly crochet on to a fabric? Crocheting experts, please help.

Let me leave you with another piece of embroidery ,this time on a face towel .I bought it from Koonor,while returning from Ooty. Apparently, these are stitched by nuns.