Here is an example of how I like to sign my blocks. I have used my craftster name on this one, the year, and have drawn in a little cactus. Most people like to add the year, sometimes the month, sometimes also the city or state they live in. I have seen people draw little sewing tools by the autograph, or any little picture that they feel represents them. There is no wrong way to do this, just remember where the seam allowance will be.
A practice block. Of course, my point is going the wrong way. Oh well, my collection of orphan blocks just gets bigger. Don't pay no nevermind to my scary ironing board cover. I do wash it regularly, I just can't bring myself to throw it away, since it has no holes in it. Things like seam allowances take time to master. I always tend to make mine too wide, even with my little 1/4" seam guide.
Some pics of a WIP, my Hawaiian wall hanging. I learned Hawaiian quilting when I lived on Oahu, and now I am able to design my own patterns. This is called Kalo, Ulu, and 'Aina (Taro, Breadfuit, and Earth) Now I just have to quilt it.