Lay out all the diamonds in their individual packaging.
Put the stylus, diamond holder, ad glue off to the side for the moment.
Unroll the diamond Art you plan to do, DO NOT take off the plastic, you will do that gradually as you work on it to pretect the other type of glue that holds the diamonds in place, unless you plan to do it in one sitting, which depending on the size may take 5 mins or it may take a couple weeks. The biggest I have encountered so far is 50.8 cm by 40.64 cm canvas size excluding the fabric.
Get everything ready to use
If you have the square shaped glue, peel back the piece of plastic from the corner. If you have the circle shaped one with the container, peel of the top piece of plastic, and, if you want, take the bottom and middle pieces of plastic off, and, handling carefully insert the glue into the container mentioned earlier.
Insert the tip of the stylus in, and move your hand downwards a little bit and pull back. This will almost always ensure an easy release, I've only had it fail a couple of times when doing it.
Select the first color you want do, cut a hole in a corner to pour the diamonds out of, and pour a little bit in at a time. This is recommended because if you don't finsih what you have, nad you don't have the gray dianond holder with the spout, you can't pour it back in. If you want you can buy containers to store the diamonds in.
Shake the holder gently, not too hard or they will go everywhere, but also not too soft that they don't move at all. You want the spherical part of the diamond on the top.
Doing the Diamond Art
Take your stylus tip and "grab" the diamond with the glue that inserted earlier, and you will have to do this pretty frequently, but before you do it again, and the stylus isn't grabing anymore, try taking a toothpick, taking the glue out and putting it back in. this will let each little bit of glue you use last longer, all if you have the container, and you have the glue in it, keep it closed when not in use, because it will dry the glue out, and then you will have to buy another little thing of glue.
Find the number of the color you want to do, and match the to the orresponding symbol.
Find that symbol on the canvas and put the diamond on it. The glue will "latch" the diamond onto the canvas. Please don't directly the glue on the canvas, not because it is dangerous, but because it will slowly remove the use of the glue. If you misplaced a diamond, use tweezers to grab it. It will damage the glue a lot less than using your nail.
After your done
If you want, you can straighten it, flatten it with a roller, even a rolling pin would work, and even frame it if you want to.
Note: Some Diamond Arts also has instructions on it. I have made these descriptive, so that anyone who wants to do Diamond Art can easily.