W-What was that noise!?

A somewhat NaLu drawing, with Happy as well, of Natsu, Lucy and Happy go on a job request where they have to explore a creepy forest to find someone (oooh i'm so original). They hear a strange noice and these are their reactions. I mostly drew this to try out shading, which I did to color this drawing. I hope it looks alright. I don't think I will be shading ALL my drawings... 1) because it's really tricky and 2) this was mostly just a test. I'll still shade just not on every single drawing.

Fairy Tail is (C) Hiro Mashima