It has to depend on the person you are evangelizing and on the situation. Telling a person that he has to receive the Eucharist is probably too fast if you have not explain to him about Jesus, and that probably too fast also, if he has not seen and understand the necessity to be free of sins and about righteousness.
I am a poor evangelizer myself, I usually start by trying to show a person by my stance and action what I hold unto and what I reject.
Words are important. To say the correct one in a given time and situation may be difficult.
However, if you have sufficiently confident and resourceful character, yes, you can evangelise a person by mentoring him.
God bless.