Although it's a sketch, i really like the style you took with the crosshatching. I like the color palette choice a lot. I think it's pretty damned impressive for a first try. It'll be amazing to see works from you once you've had more practice for sure. Keep it up! Lots of potential.
work on your pen pressure settings, start with a sketch, then move to lining it, and then do colouring and shading, honestly i'd recommend watching anime speed paints, some ones that have definitetly helped me are below