I built the refuelling point from plasticard and strut, I bult the frame for the canopy and placed into position to see that the sizing was correct and had enough clearance over the locos. With the frame built I installed LED 12v strip's onto the plasticard and wired between, I planned to put corrugated aluminium over these and cut around the struts with apertures cut in to hide the wires and most of the strip. Installed two O gauge refuelling points purchased from eBay which were painted yellow, these will be further detailed and weathered and flexible pipework installed.