The only thing that concerns me about the way you did it, is that you need room for the beer line to go up into the tap. Seems like the freezer would be in the way.
Additionally, since the freezer tray has been shoved up to the top of the fridge, you may run the risk of freezing the beer line. I would suggest unplugging it and letting it come to room temperature, and then bend the freezer tray down so that it is vertical.
That will leave you plenty of room for the beer line and prevent freezing.