I got the boiler covered with metal duct tape, embossed some door patterns in. Domes were layered up out of balsa and sanded on a boiler scrap to get the
(http://1stclass.mylargescale.com/jerrybarnes/844%20Build/844dome1.jpg)
contour. I added some side pieces to the one in front of the cab. Have since put a 1/32n’d balsa over it. Will finish both with metal duct tape, embossed with the forms that are on the tops of them. That front one may be a challenge!