I'm glad that despite a few learning curves, you are enjoying the process.
Firstly, I don't freeze sponge....I didn't know you could actually. My recipe is
quite light which is why it's such a task to carve the things
I've heard that pound cake that 'Cake Boss' uses is really good for carving.
With keeping Tink upright, after I carved her out, I
had to lift her up, and put her through the support rod that I'd glue-gunned into the
cake board. I put a smaller rod through from her head to the bottom as straight
as I could so it would help guide me to the support rod on the board. I don't know
if this is the correct way of doing it, but it worked for me.
I hope that helps a bit. It's sometimes a bit difficult to explain exactly without making it sound