I understand your questioning of those spots that you circled but frankly, others just don't see those spots as you do. They focus on the big picture which, because there is some hair in those areas, conclude they are good parts of the beard. Try not to feel you have to have the perfect beard to have beard success at this point. You have better coverage already than some guys I have seen in person who are twice your age. Let it grow and be proud of what you have so far... then you will be up to accept your beardedness and claim beard success as 18 yo.  Of course, your beard will get better as time goes on... but it's important to get comfortable with the beard you can grow now. 

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