Longer jumps should use labels. We definately want that one to be '0'. We want that one to be zero also. There is also a 'bsf' to set bits. The program is a continuous loop.
Labels have to start in column one.
Just about everything else can not start in column one. It isn't hard to change the speed of the counter in multiples of 2. Vary these bits and see what happens to the counter. A single resistor and LED can be made into a probe that you can use to examine these port pins. A low current LED is nice for this because you don't have to worry about drawing too much from the pins.