ok! thanks for the advice, i'll try to keep that in mind next time!
Just to let you know, I did spend my time on that and put effort into it, so you're not getting a rip-off or anything XD! Sorry if you don't like it.
oh and btw the speed depends on the comet, it's gravitational pull towards other objects, and the velocity of it. So in reality, comets can go at any speed, they can even stand still. So both of our comets were going at accurate speeds.