Hey, Jim
Thanks. I rolled out milliput into thin, < 1mm, worms (thinner the better but with milliput you get a lot of time to experiment). Track them along the joint and press them down until they hold and then take a toothpick with one point chopped off and press it into putty to make the pattern alternating between blunt and pointy depending on what makes it look right. It helps to keep the toothpick wet so that it doesn't stick to the millliput and pull it off the model. Any epoxy putty with a decent working time would work just as well I reckon.