I am trying to do a 12-14" human figure in RKT. I got the figure made ok and I covered with fondant. The only trouble is I didn't put any icing on the figure first. Now the fondant is stuck to the RKT and my figure looks like its covered in warts. What I need to know is, can I put buttercream icing over the fondant to smooth it out or will the icing melt the fondant and just slide off. This is the first time I tried making any figures out of RKT and fondant; the figure was so big I didn't think I could use just fondant or gumpaste. Can anyone give me any advice on how to regroup with this mix up. All advice will be appreciated.

I think you can just add another layer of fondant over the other one. I would lightly mist it first and then add the extra layer

ditto MnSnow, the 2nd layer of fondant will smooth it out a bit.
For the future try covering your rkt figures in white chocolate, it makes them more sturdy and fills in the bumps.
HTH.