Looks like an impression mat was used, to me. Maybe hide the seams by putting them on the backside and placing pearl "buttons" to make it look like the back of an elegant wedding dress.
You're welcome sweetheart, I think the effect is gorgeous and elegant. I haven't tried the technique yet but the pictures make it seem very approachable.
To make it a little firmer, extra flour can be added. Folding in whipped egg whites can also stiffen a batter, again depending upon how loose it is to begin with.
Cuppy, first let me say that I don't know about using gelatin as a stabilizer in a cream cheese frosting or the weather in your country. It's hot and humid here in the south and what I do is make a stiff shortening based buttercream and...
Butter/cream cheese/powdered sugar frosting never holds it's shape for me without being sickly sweet. What I've found works is mostly shortening with a little butter and a little cream cheese (for the flavor) with powdered sugar, almond...
Chantilly is great! There are different recipes but it's a Mascarpone Whipped Cream with a little almond extract in it. Light, fluffy and lightly sweetened like Angel Food Cake.