The audio of the sfx is fighting with the game music and is only in the left channel. This could be cool for having the soundscape move with Samus, but it kind adds to the muffled nature of the SFX because they're only in one channel. (Just saw your description, I feel you there)
A suggestion for the floor of the environment is to have a reason why samus jumps over that area like a bigger hole that isn't traversable or maybe some acid or spikey plants to match the background. It looks very cool to see her morph ball to wall cling, to jumping over into a run, but she just could have hopped over that area with no trouble and kept running so the pacing feels sluggish due to extra movements (But it does look cool so there's that).
This is still a storyboard so it's cool to have fun with things in a stage where reworking them won't take too much. Interested in seeing what else is is being done with this idea! Don't lose to the audio!
Edit: No worries! Keep up the good work!