Starting out in stylised vfx and prepping for this year vfx artist applications

I have been creating visual effects since a month now. I want to apply in several studios in the month of October.
It would be really great if someone can give me tutorials and resources for getting started in stylized vfx.
This is my current portfolio -
Would love to have some insights on my work, where can i improve and what all should I do.
PS: I am targeting studios like riot, ubisoft and insomniac (I know they are huge studios but yes I would love to try and get in )