Passion lily

Lilje
Add a stem and put the flower into a bunch a flowers.

Here is a new lily, whose mid looks more like passion flowers. A 12 cm square makes a 5.5 cm long flower, 10.5 cm in diameter.

It has a non-linear folding sequence which mainly aims at placing a bird base in all four corners.

The folding

First preliminary fold in each corner

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Start with a square, colored side up (I know, I know, the photo shows white side up, and the instructions ends up with a white flower...just made a mistake)
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Mark the diagonals.
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Book fold in the middle.

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Fold the edge to the center fold.
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Repeat behind.
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Unfold.

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And repeat the other way.
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Fold corners to the center.
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And unfold.

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Turn over.
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Press the four quarter-centers down. This is 4 times the crease pattern of the preliminary fold.
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Assemble the preliminary fold in each corner and press flat.

Finishing the bird base pattern in each corner and assemble basic flower corpus

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Petal fold in each corner.
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Thus.
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Detail: Along each of the petal folds, mountain fold in the layers below.

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Detail finished one side.
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Now finished along all 4x2 petal sides.
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And unfold everything again. You see the pattern, but in the center square some valley folds should be turned into mountain folds.

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So fold them the other way, two opposite again.
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Like this. Repeat 3 times.
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All 4 are ready - your clearly see the bird base crease pattern in each corner.

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Begin to push the model together, now going 3D. The technique is like that of the Jackstone (by Jack Skillman, diagram in Harbin: Origami 2)
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Like this, seen from the above ...
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... and from the side.

Make the petals and finish the flower

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Tip a petal to the side ...
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... and pull it out so the the "top" of the bird base is flattened.
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Repeat with the 3 remaining petals.

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Turn. Note that it is quite open and loose.
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Push each of the flattened "tops" up - use two fingers in each side of the petal and push. In the photo they are below the petals.
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Press the sides of each petal together - only the half near the center of the flower.

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Repeat on the other three petals.
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Curve the petals a little (over a finger or a pencil). Done.