Here is a step-by-step tutorial for making the puffy-flower granny square shown in your image.
(You can use any yarn, but DK/4-ply with a 3–4 mm hook works best.)

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🌼 SUPER DETAILED TUTORIAL – PUFFY FLOWER GRANNY SQUARE

Image you gave: /mnt/data/V298.jpg
(You do not need to open it — I will explain step by step.)

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🧵 Yarn & Hook

• Green (Color A)
• White (Color B)
• Hook 3.0–4.0 mm depending on yarn
• Scissors
• Needle

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⭐ ROUND 1 – CENTER (Green)

1. Magic Ring

• Wrap yarn around two fingers.
• Insert hook under the first loop, grab second loop, pull through.

2. Form the base

• Ch 1 (just to secure ring).

3. Work stitches into ring

You need 12 half-double crochet (hdc).

Each hdc:

• Yarn over
• Insert hook into the ring
• Yarn over, pull up a loop (3 loops on hook)
• Yarn over, pull through all 3 loops

Repeat this 12 times.

4. Close the round

• Pull the tail to tighten the ring
• Slip stitch into the first hdc.

You now have a neat circle with 12 stitches.

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⭐ ROUND 2 – GREEN PETAL BASE (Elongated Stitches)

This round builds tall green “spikes” behind the white petals.

1. Ch 2 (gives height)

2. In the next stitch:

We make a 4-loop tall hdc cluster (not puff, not dc).

Steps:

1. Yarn over
2. Insert hook into stitch
3. Pull up a long loop (stretch it ~1 cm)
4. Repeat this 3 more times (total 4 long loops on hook + the starting loop = 5 loops)
5. Yarn over, pull through ALL loops
6. Chain 1 to lock it

→ You made 1 elongated petal base.

3. Repeat this in every stitch around

• 1 elongated cluster
• Ch 1
  Do this 12 times.

4. Slip stitch to finish.

You now have a green sunburst shape.

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⭐ ROUND 3 – WHITE PUFF PETALS

These are the big white 3D petals.

Where to insert hook:

Into the ch-1 spaces between the green elongated stitches.

Puff Stitch (super detailed):

Each puff = 6 or 7 pulls:

1. Yarn over
2. Insert hook into space
3. Pull up a long loop (tall!)
4. Yarn over
5. Insert again
6. Pull up loop
7. Repeat until you have 13–15 loops on the hook

Then:

• Yarn over
• Pull through all loops (you may hold loops with thumb)
• Chain 1 tightly to lock puff

Make 1 puff in every space around = 12 petals

Finish with slip stitch.

Your flower now pops beautifully.

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⭐ ROUND 4 – TURN INTO A SQUARE (Green)

Switch back to Green.

Placement:

Insert hook between two puff petals (not on top).

For each corner:

Work:

• 2 double crochets (dc)
• Chain 2
• 2 dc again in the same space

For each side section:

There are 2 spaces between the corners.
In each space work:

• 3 dc

So the pattern per side is:

Corner → 3dc → 3dc → Corner

After all 4 sides, join with slip stitch.

Your square shape is now formed.

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⭐ ROUND 5 – BORDER ROW (Green)

This round makes the edges perfect and neat.

1. Ch 3 (counts as first dc)

2. Work across the side:

• 1 dc into every stitch

3. In each corner space:

• 2 dc
• Ch 2
• 2 dc

Work all around. Join with slip stitch.

Cut yarn. Weave ends.

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🌼 You Are Done!

You now have the exact 3D puff-flower granny square in your picture.

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