Considering that much of the effort in the video is about down-converting 5V to 3V using a ton of 1k and 680 resistors, and here you have 3.3V directly, I´m not sure why you´d want to follow the video exactly. You should be able to connect the pins directly, unless you´re worried about the 2.5V-3V vs 3.3V difference, which -perhaps- you should be, in which case you could simply use different resistors. In case it´s not clear,
5V * 1k / (1k +680) ~ 2.98V
3.3V * 1k / 1.1k = 3V
3.3V * 1k / 1.2k = 2.75V
So, you could simply replace the 680 ohm resistors with 100 or 200 ohm parts and get compliant I/O voltage levels from your 3.3V supply voltage.