Advice on painting a 1/12th shell ?

[aaron1974]

Hi,

Can anyone offer any advice on the best way of getting paint up into the thin end veins on a 12th shell, I had a go last week rather unsuccessfully, it didn't matter too much as it was just a single colour practice shell but would now like to paint myself something a bit more interesting, will be using water based paints if it makes any difference ?

Thanks in advance...
Aaron.