G'Day Steve.
Not a bad first image... is the red glow in the bottom right hand corner light pollution or amp glow? I suspect it's light pollution - it seems a lot for amp glow on such short exposures. The image seems a bit red, but you'll gte the hang of colour balance as you go
. Focus needs some work too as you noted.
Are you sure they are satellites? They don't seem to move very far between shots (very slow apparent motion) but I can't think what else they'd be
.
Looking forward to more...
Al.