I really wanted to go outside and sketch something but it was super cold so I decided to stay indoors and draw/recreate a picture that I saw in the Internet and quite liked, don't know why.

Here's the original picture. I don't even know how I got there o_O

I first drew the line work, then waited a bit to paint the tree mass with diluted Sailor ink in a water brush, and finally applied some water over the line work which hadn't dried yet... so I got the subtle grey tones with that. Might want to experiment more with that and see how it works out...