My writing goals

Writing Goals: At the beginning of the year my writing level was 5B, My current level now is 6B, I was literally shocked when I looked at my level the first time. Why am I at that level now? The real question is how? I practiced writing, I know it sounds cliche but I really did, I made character descriptions and stories and some factual stuff as well, practicing different writing styles and different language. But one of my gaps are punctuation, To be honest I don’t understand why. Maybe because of the overused commas I always have a habit of that. What is my next goal? Let me put it in one simple sentence. Get to level a 6A by the time the term ends.