Yup same idea as the ones I do. I use stell pins being the only difference.
Be careful using hot glue, wear silicone gloves.
Dave you looking in my thread, I put this here as a reference.
Build a few of these.
Basically.....steel pins stuck in a lump of green stuff, stuck to (in this case 40mm) and stick green clump foliage on the pins using hot glue / superglue.....spray black......lightly spray grey....then dollop on red yellow and orange! Simples!
Then you can expand on it and add debris....
Or bigger explosions.....to be fair this is a ball cock covered in clump foliage
Or....and my favourite, make something blow up mid air.....we did this for Gamesday a few years ago. Aircraft painted by a friend on AB...explosion by me.