The Book Is Getting Closer

I have set a goal to write a book this year. Now this is not a normal book. This is a children's book. I came up with a concept for it about 3 years ago. The story is based off a character named "Irwin the Incredible." I have several other characters slightly planned for the book including his two best friends, his annoyingly perfect younger brother, his arch nemisis and "the girl." I am looking for inspirational kids books right now. Michael Ian Black has several kids books that I am looking into. My problem is I find myself trying to avoid being too much like Calvin and Hobbes or Phineas and Ferb. Oh well, I'll work on it, I am excited for it.