Hi - and welcome!
I've been interested in the GWR since my parents brought me a Hornby pannier with a few trucks and an oval of track over 40 years ago.
My Dad and I tried to make a ratio 4 wheel brake coach in the 1980s but it never got finished.
In the 1990s, I started to try Cooper Craft and Cambrian wagon kits. I then moved onto Parkside and other manufacturers whose kits are sadly no longer available. My first try a kit bashing was to convert Ratio Iron M