Hey man, what you have is really great for 18, good stache and great connectors(most people your age dont have connectors).
Very nice color too, even though it is blond it is quite visible, but with more lenght it will be even more visible.
Are you going for a particular beard style or you just growing it?
If you want to make it look like you are growing a beard and not being lazy or something, you could try carving a neckline, if you do I suggest do start low and slowly adjust it until it pleases you, be careful to not make it too high and have shaving feelings.