Here's an important tip for the person who builds this next!
The saucer is not flat, it's a kind of pear drop shape, as seen with the flange at the end of the outerim (and in the pic below)
So my advice is to cut out a few of these pear shapes to add support inside the saucer. Why - cause its damn near impossible otherwise! I had a nightmare doing it last night and put it down before it threw it lol
I got the bottom shaped but the top is to flat for me to be happy, but OK enough for me to say "it's OK, move on and learn from it"