Ouch! This is not good!
* Did you properly disconnect the battery?
* Did you use ESD precautions?
At this point you’ll need to return your system to Apple and pray they don’t notice the fact you pulled the SSD out (of course putting back the original). The cleaner it looks the better!
Review Step 10 here [guide|72415] the tape is the giveaway see if you can emulate the same look.
Good Luck!