Some illustrations for Slug House, an upcoming OSR adventure

A year ago I managed to find a steady gaming group through Roll20. Turns out the GM in this particular merry band happens to be a writer and game designer. We're currently testing his new OSR adventure module called Slug House and I offered to do the illustrations for the whole thing. It's a lot of work, over 20 illustrations plus the cover (full color) and another full color potion shelf for the interior but it's satisfying to visually bring that world into existence. I'm mostly happy with the illustrations so far but I always feel I could've done better. Regarldess, that's how I feel about everything I do. Here are some, but not all, the pictures I managed to mostly finish thus far.