broken bong

basically i tried making what this guy did
https://www.rollitup.org/toke-n-talk/31607-1st-ever-bong-hit.html
, but.... when i go to light the weed, all the smoke comes upwards instead of down into straw and into bottle.. what am i doing wrong..

im wasting weed.. lol

pull harder, make sure everything is airtight