Of a wagon...I've got a square one just but to big and thought about a smaller square, then thought ordinary one....what would look right

Think square on the wagons myself look best :) 

agree, square on wagons

Yep think you're right...but!

 

There's a metal bracket behind it the plate's screwed onto and cant budge them, when looking at it earlier, I can trim it down but need to get the bloosy screws out, they're just plastic aswell, but my god they're tight

:D One of the more simple but annoying job's. Like changing the bulbs in my headlights it's like that. Good luck ;)