No real tutorial needed. I just used E-6000 and glued them together.
One suggestion.....You might want to get out a level when you are gluing them. One of mine is a bit wonky. The glue is thick and it is easy to end up with it thicker on one side than the other. You then have a slightly leaning candle holder.
Here is a terrible picture of the final product. (A photographer I am NOT!) I'm going to use mine for the Senior Adult Christmas luncheon at church and I'm using Epsom Salt as the filler. In real life it is actually very sparkly, snow like and pretty.
Not bad for a $2 investment!