out on a limb
(figuratively, idiomatic, often with the verb go) In a risky, precarious, daring, or uncompromising position, especially one outside of the mainstream; vulnerable.
You've got to go out on a limb sometimes because that's where the fruit is. Will Rogers
You're unwilling to go out on a limb because it just might break underneath you. Jodi Picoult
Don't be afraid to go out on a limb. It's where all the fruit is. Shirley MacLaine
Our feeling is that the most important thing on a set is that actors have enough confidence to try different things. If there's stress or tension, they won't go out on a limb because they won't want to embarrass themselves if they don't feel completely comfortable. Peter Farrelly
Stephen has gone out on a limb. He is proposing a paradigm shift. A new twist on everything. Stephen Wolfram
I think a solo moves forward the way a song does, because it's reflective of the chords that I'm considering as I'm soloing, and at the same time I'm going as much out on a limb as Frank Zappa used to, in terms of just going crazy on the instrument. John Frusciante