Dot, L, line, cross.

Flip your attention to the top. Ignore corners completely — this stage only cares about the four yellow edge stickers, and they're currently showing one of four patterns:

Dot — run the algorithm 3 times total.

L-shape — hold it top-left, run twice.

Line — hold it horizontal, run once.

Cross — done. Skip ahead.

Yellow cross

F R U R' U' F'

Sandwich: F opens, the trigger's first four moves run, F' closes.

1Identify your pattern: dot, L, or line.
2Hold the cube so an L sits in the back-left corner of the top face, or a line runs horizontally. The dot works from any angle.
3Run F R U R' U' F'. The pattern climbs one rung: dot → L → line → cross.
4Re-orient per step 2 and repeat until the yellow cross appears.

Tip

Notice you already know every move in this algorithm — F, then the trigger, then F'. From here to the end of the solve, nothing new is asked of your hands, only of your eyes.