For this episode some preparation with gesso is needed. Now after having finished this episode I ask myself why the devil I made myself so much work with the background trees 😀 (see second photo)
I think I could have saved some time here, LOL.
My opinion about this episode:
Rather a dark one which needs a lighter place on the wall to be effective.
Bob did a lot of similar scenarios like this in the later series. They are all pretty straight forward without big secrets. Most important for these scenes is to use as less liquid clear as possible. Other than that I would really recommend to varnish these scenes after sufficient drying time. This is because also oils darken after some time and the varnish brings it back to more contrast.
I went a bit crazy in making those stones with the filbert, this works so well and I had to calm myself down to not overdo.
This is oils on canvas panel 20 x 28 in (50 x 70 cm)