The Stuka looks good Rob, nice work.
Lee, if I hadn't known this was your first model, I would never have guessed judging by the results so far. It's bl**dy marvellous man!
I wouldn't worry about the 'square' castings on the swing arms etc, as they are more than likely correct, although I can't swear to it. The 'Bren carrier' was built in various factories, in various Marks and, like many military vehicles, there would be variations in design/pattern of some components - the Sherman is a prime example. I'm not sure about the 'seams', but they can't be seen anyway, and the overall model looks terrific, and I'm not just saying that to 'bull you up' either. Although the 'carrier is a relatively simple model, there are still areas that can be tricky, the running gear being one, and it seems you've done a really good job mate. Try an aircraft kit or two next, and the Wellington should pose no problems. I'm quite advanced with the 'Beginners' guide thing, so should have it posted in a couple or so weeks.