I'm attempting a Elsa dolly-varden cake for my daughter and to avoid colouring my own fondant I bought the satin ice baby blue...and now I'm worried it's going to look wrong as Elsa is a bit more greenish than baby blue!

should I just keep going and the kids won't notice? Add some green colouring? Dust something on top (not sure what)?  Any suggestions welcome!  I am planning to add some white snowflakes on top.

It would not be difficult to knead in a tiny touch of green, @misse10 ‍, but I am betting 100% that if you use the baby blue as is, the children will never notice the difference and will be thrilled to death.  It would save you the worry of trying to tint the fondant and take the chance of getting it too green.