Answer:
I move without wings between silken strings. I leave as you find my substance behind
What is seen in the middle of March and April that cannot be seen at the beginning or end of either month?
I go up and down at the same time. Up towards to sky and down towards the ground
In your fire you hear me scream creaking and whining yet I am dead before you lay me in your hearth.
I am one small little piece of paper yet sometimes hold lots of value. I am all you need to get in to big events but will cost you. I am an important part of travel. And if lost you're not coming.
I touch the Earth, I touch the sky, but if I touch you, you’ll likely die. What am I?