Lesson 1: Holding and loading the brush
The green squiggles and commas keep the same load from start to finish, with no dry gaps or puddles. The two little landscapes have a streaky sky and some backruns where the crimson hills met the wet green.
Dark trees against a pale field give the landscapes some depth, but the hills and sky sit in the same mid value.
Varied greens on purpose in the landscapes (olive, yellow-green, a dark green for the trees), all clean. The crimson hills are straight from the pan.
The hatching and the fir-tree needles are crisp where they should be. In the landscapes, crimson ran into green where it wasn't planned.
The fir tree is the star: quick tapering strokes that get shorter towards the top, so it reads as a tree straight away. The tapered commas show the grip is working.
The landscapes are stacked in equal bands of similar width, so nothing leads the eye.
Do the press-and-lift lesson next. Your fir-tree needles show you've already got the start of it.