Hi Manna
Last year I was inspired by this thread to have a go at building locos out of plastic and various other bits for myself. I've shamelessly copied your J3 but mine has a modern Hornby chassis. That was done last year and this year I decidied to tackle an O1 but unlike yours I used some Heljan bits to make the tender chassis and smokebox. I hope you don't mind me copying you and posting some photos on here.
Regards
Jamie