jeromech, I don't want to step on SS's toes here. It's usual to join a GB with a build that's un started or at most slightly started, usually no more than 50%. I know he hasn't mentioned this yet, I am guessing he will put that in on the GB thread.
Your build looks a bit past the 50% mark, I reckon you could finish that by Jan. The main point of the G is to post pics of your progress from start to finish and share it with everyone.
Your loks a cracking build, I am sure we would all love to see more of it. If SS doesn't allow this one, maybe you have something in the stash that's unstarted you could enter with and maybe do a separate thread for the one you are doing.
I am a Norfolk man and i glory in being so
On the bench: Airfix 1/72nd Harrier GR.3/Fujimi 1/72nd Ju 87D-3