Overall, great job with the graphics and overlays. Great positioning the characters. I think using the & command will go a long way. It will help with the pace of your story and animations that need to occur simultaneously.
& command will cut down on awkward pauses. I know that the music selection is tough. There are long pauses of silences before a sound effect occurs.
You can mess with the volume
volume sound (0) [0]
For this example parentheses is how you adjust the volume 0 out of 100 and brackets is how you mess with duration 1000 equals 1 sec
volume music (0) [3000]
volume sound (0) [3000]
Example on how to code
sound knock
volume sound (60) (2000)
I published my story, hope you like it! Title : My Strange Magical Dream Genre : Fantasy Style : LL Chapters : 3 and more coming Description : Every night, you have this strange yet magical dream with this mysterious person that appears in it. Would you be able to find out who was the person and the meaning of your dream?