It's fine to try to predict future prices and to share those with people, but you really should not be telling people that trading based on your predictions is safe unless you have very vast amounts of data proving that you can consistently profit over years of trading in many, many different market conditions. Anything short of that is deception, and making money off of a service like this would be illegal just FYI.

But like I said, if you advertise this as predictions and disclose that it is not necessarily safe, then you are golden. And as I mentioned, accepting money would be illegal unless you are certified.