Budget horns!

Hey folks! I need some horn help.

I have a commission due out by Thanksgiving and I'm looking at making a pair of smooth Eastern dragon style horns that look roughly like this:


I've looked through the memories, and I'm thinking about making a card board pattern, wrapping that baby with tinfoil, covering the tinfoil with some masking tape, adding some celluclay and then plasti-dip. Is that going to give me a decent horn? Would I need the celluclay over the masking tape to hide bumps, or will the plasti-dip smooth those areas? I'm not expecting fully crush proof here, but durability is a concern, as is materials cost (I'm very, very broke and cannot afford casting materials at this time).

My other option is to use apoxie (the eyelid clay) over the tinfoil/masking tape, but all I have is black and I'd rather not use it all up, even though I think it would work well.

That said, does anyone have a small amount of celluclay that's sitting around collecting dust? Willing to sell to me and ship quickly? I'd rather not have to buy a bunch for one small project.

Any helpful tips are appreciated!