What do you mean by bloomed gelatin? Gelatin needs to be heated to go from the granulated form to the liquid form.
Sprinkle the gelatin over cold water.
Let the gelatin stand for a minute or so until the gelatin is absorbed by the water.
Microwave the gelatin for about 30 seconds at high heat. The gelatin will be clear and melted. Now you can use it to stabilize your whipped cream.
How To Make Stabilized Whipped Cream
In the bowl of a mixer, beat the cream until it gets thick and starts to form peaks. Gradually make your way to high speed otherwise you will be wearing it. And so will your counters, ceiling, floors, you get the idea.
Gradually add in your sugar. I used confectioners sugar here, but usually I am too lazy and use plain old granulated sugar.
Add in your stabilizing agent of choice. (If you are using Whip-it though, that goes in first.)
Flavor it however you want. I am loving vanilla bean paste right now so I am using it in everything.