Hi @NastassiaZ, I really like your effect! and as @ryangatts says, the amount of charge at the beginning implies you are going to release a lot of energy, but instead, the player is throwing a few low powered projectiles. One way you could solve this (if you want to keep the charging as it is) is to envolve the character with an energy aura that vanishes as you are firing projectiles — this way the player knows that he/she has to gather energy to attack and also that that energy is limited.
Regarding the feeling of ‘not knowing when to stop’, that’s a constant for artists (and this is my personal opinion) it is because we want to make the awesomest piece ever and not just a boring functional one hehehe, or could be that we are afraid of not being good enough to release work that doesn’t meet our high standards… anyways, those are all just irrational thoughts Natassia. Keep on the good work!