At this point is when we lose the most amount of beards. Men will typically get a little ambitious with their razors, cut too much and then shave the entire thing off. Because of the risk of mistakes, I recommend waiting at least a month to trim if possible.
Most new beardsmen trim the neckline too high. The ideal location for the line is where the neck meets the head.So whatever your beard area is parallel with the ground, do not trim; whatever is parallel with the world infront of you, then it’s ok to trim.
The reality is that it’s very little of your beard that you are trimming. You shouldn’t need to look up to trim and aim to shape a nice round curve from one ear to the next.
When trimming the mustache, I recommend you use a pair of scissors over clippers. This will give you a little more control and only cuts a few hairs at a time. With the cheek line try to go with your natural line and only trim off the one or two stragglers that are outside that line.