with all that my first step was to glue with super glue the big parts like the ash and parts as you see fit then after they are placed you put the glue like a cup cake top, here there is a little bit of info that you must me aware; if your base has a hole like the one in the flying bases I used here you should put a peg to keep the hole unobstructed by the glue and sand.
it should be smooth but it will work if not. While the glue is wet you submerge the base on the sand, like you can see next:
you can see that a good bath of sand is necessary, when finally done you take it facing down the sand ant tap to drop the loose sand.
after that you might want to sprinkle a bit of sand on the uncovered glue.
then you remove the peg and uncover the hole if the base have one, that must be done fairly quickly or you wont be able to remove the peg and that would mean that it would get dirty if you let it glue and haven't primed the base. At this point you will have collection of good looking bases.
In the next installment I will add the bitz and start the painting, so stay tuned.