The first question is fitting the neck to the body. I've carefully sanded the body to allow the neck to fit in. It seems to fit in quite well now, but it doesn't sit flat (photo shows it better). Is the actual neck supposed to be a couple of mm above the guitar body>?

You can see the bottom of the neck is fitting into the body quite well, but the top with the frets seems quite a way above the body?Click image for larger version. 

Name:	20241030_210525.jpg 
Views:	1600 
Size:	718.1 KB 
ID:	45283