Sure! Here is a step-by-step tutorial so you can recreate the exact stitch pattern in your photo.
This texture is made by alternating:

✔ 1 row of Double Crochet (DC)

✔ 1 row of Slip Stitch in Back Loop Only (SL ST BLO)

The slip-stitch row creates the thin dotted horizontal line.

I’ll break everything down slowly.

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🌼 SUPER DETAILED TUTORIAL

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⭐ Step 1 — Foundation Chain

1. Make a slip knot.
2. Chain the number of stitches you want your project to be + 3 extra chains.
   • Example: If you want 30 stitches wide → chain 33.

Reason for +3: it replaces the first DC of Row 1.

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⭐ Step 2 — Row 1 (Double Crochet Row)

1. Yarn over.
2. Insert hook into the 4th chain from the hook.
3. Pull up a loop (3 loops on hook).
4. Yarn over, pull through 2 loops.
5. Yarn over, pull through 2 loops — this completes 1 DC.
6. Repeat DC into every chain across the row.

At the end:

• Chain 1 and turn.

This chain 1 sets up the slip-stitch row.

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⭐ Step 3 — Row 2 (Slip Stitch BLO Row)

This row forms the thin ridge.

1. Look at the top of each stitch:
   You see two loops → front loop + back loop.
2. Insert your hook ONLY into the back loop.
3. Yarn over and pull through the stitch and the loop on the hook in one motion → this is a slip stitch.
4. Repeat SL ST BLO across the whole row.

VERY IMPORTANT:
Keep your slip stitches very loose.
Tight slip stitches will shrink the fabric.

At the end:

• Chain 3 and turn.

This chain 3 counts as the first DC of the next row.

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⭐ Step 4 — Row 3 (Double Crochet Row)

1. In the next stitch after the chain-3:
   work 1 DC.
2. Continue DC across the whole row.

At the end:

• Chain 1 and turn.

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⭐ Row Repeat Pattern

From now on you just repeat:

Row A: Slip stitch BLO across, ch 3, turn  
Row B: Double crochet across, ch 1, turn

This creates the exact texture you see in your picture.

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🌼 Why it Looks Like the Photo

• Slip stitches BLO make the dark dotted horizontal row.
• DC rows make the thick ribbed vertical columns.
• The stitch sits slightly compressed because slip stitches are much shorter than DC, creating the beautiful stripe lines.

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🌼 Extra Details (in case you need even more clarity)

✔ Tension advice

• Slip stitches must be loose or your work will curl.
• Some crocheters switch to a bigger hook only for slip-stitch rows.

✔ Edge looks uneven?

Make sure:

• Chain 1 before SL ST row (not more)
• Chain 3 before DC row (counts as DC)

✔ Can I use HDC instead of DC?

Yes! If you want a softer texture.
But DC gives the tall vertical columns like your picture.

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