In 1989, someone going by the name [BLANK] made a maze game on the computer. It is said that the maze constantly changes its layout from time to time so that no one can make it to the end to claim the prize. Outside the maze on the wall, there is a cryptic message and some clues on how to beat the maze, but no one has cracked the code.
GPTESTF
FKBNG
FKBNG
KWDR
NOW
4303Q5
020103112301180419
Solving this puzzle isn’t hard
If you do, you will be rewarded with a crystal shard
Look down and you can see
The answer is in front of thee
The first step is never right
The second and third step is in the same direction that gives mankind light
The next line is the opposite if you believe
The forth step is the past tense of leave
Once you have solved all these clues
You are now halfway, don’t look so blue
Now listen carefully as this is tricky
Cause this maze is very picky
Listen to what the last three clues say
And you will be on your way
The fifth step is as you see
Next step is in the same direction as a falling tree
The last step must be split in pairs
Now there are two things you must compare
Once you solve this, you are done
Congratulations, you have won!
Can you solve the puzzle and get the crystal shard from the maze?
UPDATE:
Please show how each step was deciphered, as well as, the direction to go to complete the maze.