This is so critical in this process. I was listening to a podcast the other day on how product managers can move their ideas forward and one of the key things they discussed was with whom you share the idea first. Generally it is not wise to go and talk to your CFO or VP who may have many other things running in his/her mind. Instead, you can either start with your manager/engineering folks and even request, in other words, ASK, to help your idea move forward.
Reading your post, I can relate the above to your post as well. While we can overcome the anxiety to ask, it is also important to know WHO you ask.