I would recommend a different goal because you really have no control over whether or not your coaches will be impressed. You could pitch your best ever and they might not be impressed. So, set goals that you have control over (e.g. hitting your spots a certain % of your pitches, xx number of walks per yy batters faced, etc.). They should be a bit of a stretch but still achievable. Achieving these goals will let you feel good about yourself regardless of whether your coaches are impressed. It will also improve your chances of more playing time assuming your coaches are perceptive. If you want your goals to be visible to your coaches, ask them to help you set your goals in the first place.