As a proud graduate of the Doug Bays school of horizons, I have learned that it's very difficult to determine if you have a horizontal horizon when there are hills and mountains in the background. Typically I've been taught that it's necessary to find a structure or a tree to line up the horizon. In this case I chose the three crosses on the right side to determine the correct alignment of the horizon and have determined that all of Texas is sliding into the Oklahoma.
Some nice adornments there Doug!..good composition too!..