Essence .... if your discussing the Skull Cap Patt ::
first off .. there was NO gauge swatch to that pattern.
2nd.. it sounds as if you do crochet tight, when you do attempt the pattern again. Try it with the I hook instead of the G hook. And see how you feel about that ok.
That patt is made to be on the tight side too. So it will give the appearance of being tighter than it should be.
I read where they said on here to do up a swatch of the stitches so that you know what your lookin at.
Once you have done a swatch of each of the stitches individually, do a couple of swatches mixing them to where you feel comfortable with that too.
In doing your swatch makin you can always do them the size for coasters.