You can either go the fancy way shooting angle shots, that will probably get you through the level eventually, but I don’t think you can get 3 Stars with that method. Why don’t you do as I did, achieving three stars at level 89. I shot straight up crushing the Crystal Bubbles. It is quite easy, you build one or two bubble pairs under the crystal pyramid and the burst them. Getting spiders at the early stage of level 89 is not essential at all. Just go straight up, up, up, UP! That will give you really many aiming spots for bursting cluster after cluster when you are playing the middle area. So you’ll have a nice bunch of yellow and green spiders when the ceiling drops.
If you happen to have the Charm of Shattering, this is a level that you will find it very useful on. :)