You can refer to the method of origami into flowers. You can fold the paper into lilies as follows:

Cut the colored paper into squares with a knife, and then fold it in half along the diagonal. As shown in the figure below:

Fold in the direction shown by the arrow above to form a triangle.

Pick up one of the corners. As shown in the figure below:

Flatten the picked corner and do the same for the other three corners.

According to the picture below, fold the two corners in half along the center line, and do the same for the remaining three sides.

Spread the fifth step like the fourth step, leaving the crease of the fifth step.

Fold the top corner to the bottom corner, so that the top corner and the bottom corner coincide, and then restore.

Lift a corner as shown.

Fold both sides of the corner of the protrusion inward along the previous folding line.

Then fold the top corner down.

Repeat steps 8, 9 and 10 for the remaining three faces.

Fold the two corners along the center line.

Repeat the previous step for the remaining three edges, and the result is as follows.

Fold down the top corner and do the same for the other three sides.

A beautiful paper lily will be folded.