Legacy Photography Logo Request

Good Morning Everyone..
So I have been trying and trying to make a couple of logos of the last couple of weeks with no success.. and I must say I think my website is looking VERY dull.. I am a start up photographer with my sister.
We have www.lsmphotography.printroom.com
For a joint photography company we use LSM Photography and when we work on our own we do Photography by Laurel and Photography by Stacy

I've been trying to make logos that all correspond with each other but I obviously have not gotten very far.. Ive tried researching things but I don't know where to start.. Could someone possibly assist me? I don't mind doing some work if you perhaps know of a good Tutorial (which again I have found a few but none Ive been very good at)
I am trying to come up with a logo for the header of our website and then logos for us individually that can be used on our personal blogs or as a watermark on our photos (www.photographybylaurel.blogspot.com) Any thoughts or suggestions would be greatly appreciated!!