What method might that be? I'm open to any suggestions..
And that bubble tut may actually help, although Step 12 will confuse me no doubts
step 12 I don't think is necessary for the sort of glass bubble you're looking to achieve, though.
and also, my method goes like this:
with 3 custom brushes and 4 colors: really dark green, dark green, green, light green, stamp out the general shape of the grass in the darkest color, using all three shapes. Then, use the next lightest, then some patches of the darkest color, then color with the lighter green, then normal green, then the second darkest green, then the lightest green, then the normal green, then the .. well, you get the picture. If you want the brushes, just PM me