Light Painting & Stop Motion Video ( Once Upon a Staire ) ^^

Hi everybody , i am new here and i love the art of stop motion .
I am french director of 22 years old , and this is my first try at stop motion with light painting.

As there must be experts on this board i would love to know what you think and let me know how i can get better in stop motion.

here the link where you see my video

https://www.youtube.com/watch?v=dSH0HeRcHjk

Let me know ^^