So I've been working on Mr. Celery and pausing every couple of minutes to watch the snow fall (if any.) I finished the pig boss. What I did was when the pigs stop flying by, jump on his head. Then the little green pigs move faster. And when they stop, jump on his head again. Then the little green pigs come faster still and when they stop, jump on his head. Then the game ends.
But most of the time was spent trying to make the scanline count steady at 262. Level 6 was giving me quite a fight, but I eventually did it. Next is change the layout for level 7. All I have to do is change values, but since I've been working on this for a long time, it will have to wait until tomorrow.