I think the biggest thing is being honest about ability as well as how you perform in the classroom. Just because you received a letter from the CWS championship program doesn't mean that would be a good fit for you.
Most have received letters because of some list generated, not often because they have seen you play or even you would be a consideration. They need money and want you to attend their camp.
Calling every coach who sends a letter along with a camp brochure is, IMO a waste of time that could be served better elsewhere. Now if that coach has sent you his # amd email or contact one of your coaches, that's genuine interest for sure and go for it.
Being realistic is the key to success in recruiting and not being is why players don't get offers.
Everyone's recruiting experience is different, but generally the same rules apply for everyone, be realistic, work hard at improving your game, work hard in the classroom, seek exposure and follow up on all serious responses or inquiries.