Of course — here is a step-by-step tutorial, written as if I am sitting next to you while you crochet.
This will explain exact loop counts, where to insert the hook, how long to pull loops, and how the border is made.

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🧶 DETAILED TUTORIAL — PUFF CENTER + LONG BORDER SQUARE

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⭐ PART 1 — CENTER PUFF SQUARE (GREY)

Step 1 — Make the center ring

1. Make a magic ring.
2. Chain 1 (does NOT count as a stitch).

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⭐ Step 2 — First round of puff stitches

You will make 8 puff stitches inside the ring.

How to make ONE puff stitch (PS)

1. Yarn over.
2. Insert hook into the ring.
3. Pull up a long loop (about 1 cm).
4. Repeat:
   → Yarn over, insert into ring, pull up loop
   → You should have 7 loops total on your hook.
5. Yarn over and pull through all loops.
6. Chain 1 to close the puff.

Do this 8 times:

( Puff stitch, ch 1 ) × 8

Pull the ring tight.
Join with a slip stitch into the top of the first puff.

📌 You now have a round of 8 puff stitches.

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⭐ PART 2 — SQUARING THE CENTER

Now we will turn the round shape into a square.

Step 3 — Forming corners

Each puff stitch will receive another puff on top of it.

But at 4 points, you will make corner chain spaces.

Work the round like this:

( Puff, ch 1 ) in next st
( Puff, ch 1 ) in next st
( Puff, ch 3 ) → CORNER

Repeat 3 more times around.

You should now have:

• 12 puff stitches total
• 4 chain-3 corners

Join with a slip stitch.

📌 You now have a puff-stitch square (still grey).

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⭐ PART 3 — LONG BORDER STITCHES (WHITE)

Switch to white yarn.

This is the part that matches the image:
long vertical stitches worked between puff stitches, not on top of them.

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⭐ Step 4 — Preparing long stitches

You will work elongated stitches around the square.

These are NOT normal stitches — they are tall loops pulled up to match the height of the puff rows.

How to make ONE long stitch (LS)

1. Insert the hook between two puff stitches, not through the top.
2. Yarn over.
3. Pull up a long loop — tall enough to reach the edge of the puff square.
4. Yarn over and pull through both loops on hook (like a single crochet but stretched).

📌 It will look like a tall straight “post” stitch.

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⭐ Step 5 — Working along one side

On each side (between corners):

You will work 5 long stitches.

❗ Insert the hook EXACTLY here:
Between the “puff bumps,” into the gaps created by the ch-1 spaces in the previous round.

Example for ONE side:

LS in gap 1
LS in gap 2
LS in gap 3
LS in gap 4
LS in gap 5

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⭐ Step 6 — Working the corners

In every corner ch-3 space:

3 long stitches
ch 2
3 long stitches

This widens the square and keeps it flat.

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⭐ Step 7 — Repeat for all sides

Work:

5 long stitches on each side
3 LS, ch 2, 3 LS in each corner

Join with a slip stitch into the first long stitch.

Weave ends.

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🎉 FINISHED!

You should now have a square identical to the one in the image:

• Thick grey puff center
• Soft elongated white border
• Clean straight edges

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