You could use this code:
http://debbisdesign.blogspot.com/">See my blog
Pink - Where you want the link to go
Purple - What you want it to say
If you want it to say more than your link just put it before/after the Just make sure to put your proper spaces.
I have not seen where you can edit your own comments. You could use the preview before posting to make sure it is how you want in before posting