No offence Ain but your instructions sound a little confusing.
I'll try simplify it a little.
Been a while since I did this, but I just took some pics specially for you as a really rough guide, as I can't 100% remember everything but I have a good idea of it.
There are 4 points that the stock grille connects to. Should be same for any decent grille you buy.
I took a photo of one side of the grille so you get an idea.
The red indicates 2 (of 4 total) spots where the clips are at the top of the grille. To get to these place a flathead screwdriver in the hole section which I marked in blue and you will see a clip where you can fit a flathead that will release the clip. Hard to explain and I can't be bothered trying to take detailed pictures. It's self explanatory basically. Place flathead in hole and pry until clip releases. Takes a bit of force but they will come out provided you are putting it in the right spot.
Once the 4 clips are unlatched you can undo the 2 clips (1 left 1 right side) which I marked in green. A flat head and a set of curved needle nosed pliers are always the trick with these particular clips, especially the cuntish ones under the car that get coated in dirt! (under car ones not related to this particular guide)
When you have undone those 2 final clips, the grille may seem like it's still stuck in, especially if it's never been removed before. basically if you look at it like this it's easy to understand. The chrome surround of the grille actually functions (for the bottom section) as a "clip" itself. So that entire bottom section is actually slotting in to a "clip" and all you need to do is slide it out horizontally with a bit of force if needed. If that makes sense.
Any questions and I can help you out / every other person on the forum who has changed their grille can.
And Corsair you are always welcome to come around to my place / I can even meet you half way to help you if you are not comfortable doing it yourself.