It looks like you have very nice coverage and you should be able to grow a good beard!  There are a few guys on the board with ginger beards and darker hair, so you just might get your wish.  image  As for the neckline, it's good for it to be 1 cm above the Adam's apple in the middle and then curve upward to be in line with the backs of the ears.  There are guidelines for carving a neckline on this board; see my signature.  It also helps to do it using soap instead of shaving cream, so you can see what you're doing.  You seem to have a positive attitude; just keep growing!

Beard and Bearder

‘It is not the strength of the body, but the strength of the spirit.’ – J.R.R. Tolkien