I finally have the green house in the location I wanted for now. It seems like it will work. The block under it leveled it. The rest of the blocks Mama gave me made a near perfect layer on the bottom shelf. The weight should help stabilize and keep it from easily blowing over in our near constant wind.
I was really excited when Travis pointed out that the daffodils I planted last year are blooming. These are also another indicator that spring is just about here. Of course, ours are in a very sheltered and sunny spot so they are earlier than most. I am so happy to have these started. They have been a favorite of mine since I was a kid.