I saw this video too i think
Well, in fact, there's no rules to obtain the result you're seeking... and i think, in this particular case, it's not about panning.
The "left/right" spreading is very easy to obtain with so many keyboards, percussions, and other stuff you can pan totaly L or R, as you want.
It's more about depth, front and rear spreadin, which is a bit more difficult to manage : and which is a very efficient exercise in mixing if you just began (congrat's ! and welcome ! ).
I said i would work on the Hammond (i just downloaded the tracks and spread them on my daw) and well, the track is very mono in its feeling.
What i would try, and i don't say it would sound good..., is to seperate this track in two mono files, then delay one of them around15-20ms (letting just the delay trhough, no feedback, no repetion, nothing but the track itself delayed..), and panning them 9hr-3hr... and the adjut the volume of the delayed track so it seems balanced between both channels... but normaly, should sound much more spreaded !
Then why not adding a short ambiance reverb, or early reflections only, on this Hammond track ...
Or do something totally different ! I'm just thinking about doing this.. just to see how it works with the rest.
I listened to the other tracks and the kick is a hard one ... the inside kick is very clicky, and the outside is really thin... i might add samples to that... don't know yet what i'll do, i'm just preparing my session (which i encourage you to do before starting any mix !) : Name tracks, group color them, add buses for each instruments groups, calculate the tempo and set it on the daw (will save you time when adding delays eventually?), mark intro, verses, choruses etc ...
I'll let you know when i'm done ! but you should keep working on yours. it's much more than "half" decent ! Listen to it very low, on different speakers, and you'll see what i mean bout your kick. listen closely to how it glues with the bass.. or not in your case
Suerte chico !
Cheers from France