New Logo on Black Background

I spent some time on the computer this morning putting my new logo on a black background.  I wanted to add it under the southwest saguaro logo but have no idea how to do that.  It is soooo long since I set up this blog that I have forgotten how to do anything except new posts.  I am afraid to fool around with it for fear I may delete the whole thing.  So, I decided to just post the black background version here.   I wish I had more tech knowledge to add it to the top of the page but until I can find someone to help me, this is the best I can do.  Here it is:

I love the way it looks on black and wish I could afford to print my business cards with the black background but it would use up too much black ink.