Artwork: Two ghosts

I drew the lineart for this pic about two months ago, finally got around to finishing it.

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This is Kari, who is finding that she can hear her husband’s ghost in her head as well as her own.

I’m trying to color in a more painty way, if that makes sense? Less total smooth airbrushing and more of unblended brush strokes to give an impression of texture. I also am probably way overusing my sponge brushes for backgrounds right now, but I just love their texture. Can you tell I’ve been watching tutorials about textures?