Most Clovis points did NOT have the big honkin' flutes. In fact, most have one "medium" flute and one "short" flute. Some have only one flute. Some have no flutes at all. But they are all Clovis. Most Clovis points are about 1 inch wide and 3 to 4 inches long. The main flute is usually between 1/2 to 1/3 the length of the blade. Yours looks fine and fits right in with Clovis types.
As for the platform needed for the flute, everyone does it a little differently depending on technique. I won't get into it here because you could write a book on the subject...
On real Clovis artifacts, the platforms were not all the same. They could be a beveled edge, or an isolated and ground platform, or a simple ground edge with no isolation. These days, most guys make the flute with a jig.
Later types like Folsom and Cumberland had more refined platforms and long flutes.
I made a Clovis flintknapping video recently if you're curious to see how I make one. I used some chert that was found on an actual Native American site.
http://www.youtube.com/watch?v=8EJjtTa3RAw