I read multiple reviews before hand and really appreciated all the tips. I think the key is to purchase a paint mixing tool to attach to your electric drill. I placed the gallon of paint inside a five gallon bucket in order to avoid spills or a mess. I put '1' coat of paint on the walls WITHOUT the glitter additive, and let it dry thoroughly.
Next, I used '1' gallon of paint, and slowly mixed in '2' bags of silver glitter. I then proceeded to fill my paint roller pan and would use up that batch, then use the drill to mix up the paint inside the gallon bucket thoroughly, and then poor up the next batch of paint and so on. This way, my paint didn't thicken up or dry up.
As I was painting, I did see some glitter begin to shine through, but when it was thoroughly dry, I actually saw a ton of glitter, so much that I contemplated NOT buffing the walls. BUT, I am glad that we did, because slightly buffing the walls, the glitter immediately came to life. (Buffing the walls does not knock off glitter, it simply removes the paint that is covering the glitter, but does not remove paint from the walls).
One of the helpful tips was to purchase a ScotchBrite pad. I purchased some ScotchBrite refill pads and only used one. The buffing process took about 45 minutes and actually was very easy. It sounds overwhelming, but it was honestly surprisingly easy. I was very hesitant to attempt this project, but am very happy that I did so and although it sounds difficult, it really was almost as easy as it is to simply paint a regular wall. The glitter is a fine consistency and although I used '2' bags to my '1' gallon of paint, it is not overwhelming or too much whatsoever.
I tried to take video and pictures of the room at nighttime, and they did not do justice whatsoever. However, the videos in previous reviews are a great example of the results. I would 1,000% recommend this product and project to friends and family and I would hands down do this again in the future. I am glad that I read multiple reviews and did not give in to thinking that this would be too difficult of a project.
Update: See the attached video, but this absolutely does NOT do it justice. I LOVE it!