'It's only appearances' skepticism always includes "to me". It only works by induction on the skeptic's solipsism. The difficulty of your position is compounded by HN's interface - even the claim "it appears to me that you are made of meat" is implausible.
Even with solipsism you can easily say that I'm made of meat. On the other hand, saying your consciousness is entirely meat-based is hugely addumptive. You will not know until you are dead, if there's something more.
