Shamelessly Creating a Facebook Page

As I get closer to finishing my first novel's rough draft, I'm setting up a promotional page on Facebook to get some self-marketing underway.

Just gotta get a better banner image posted... I tried inserting one and the dang thing kept telling me the pixel size was too small, and it wasn't, I SWEAR the pixels were over 600... and still it wouldn't aaaaaaahh /headdesking

Okay, this was the banner I was trying to post:

Is it too small?