Here is a step-by-step tutorial for the stitch shown in your image — this is a Mosaic / Overlay Crochet Pattern made with front-post double crochets (FPDC) to create the vertical bars.

I’ll explain it in a simple way so you can follow easily.

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🌈 DETAILED MOSAIC / OVERLAY FPDC STITCH TUTORIAL

(Using 3 colors: White, Pink, Blue)

This pattern repeats every 6 rows, and the effect comes from making front-post double crochets (FPDC) into stitches 2 rows below.

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🧶 What You Need

• Color A = White
• Color B = Pink
• Color C = Blue
• Any hook size that matches your yarn
• Scissors
• Tapestry needle (optional)

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🪢 Abbreviations

• CH – Chain
• SC – Single Crochet
• DC – Double Crochet
• FPDC – Front Post Double Crochet
• ST – Stitch
• YO – Yarn Over

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⭐ Important Notes

1. Every color is used for two rows.
2. The first row of each color = all SC.
3. The second row of each color = SC + FPDC, where FPDC is made around the post of the stitch 2 rows below.
4. FPDC stitches form the long vertical lines you see in the picture.

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🧵 FOUNDATION

Row 0 — Foundation Chain

• Chain an even number (example: CH 30)

Row 1 — Color A (White)

• SC in each stitch across.
• Turn.
  (This is your base row.)

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🌸 COLOR B (Pink)

Row 2 — Pink (SC row)

1. Attach Pink.
2. CH 1.
3. SC in every stitch across.
4. Turn.

Row 3 — Pink (FPDC row)

Repeat the following sequence across the row:

• SC in first stitch
• FPDC around the white stitch two rows below
• SC in next stitch
• FPDC around the next white stitch two rows below

➡️ Important:
FPDC goes AROUND the POST of the stitch (not into the top loop).

Work this repeat until the end of the row.
Cut or carry yarn.
Turn.

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💙 COLOR C (Blue)

Row 4 — Blue (SC row)

1. Attach Blue.
2. CH 1.
3. SC in each stitch.
4. Turn.

Row 5 — Blue (FPDC row)

Repeat across:

• SC 1
• FPDC around the pink stitch two rows below
• SC 1
• FPDC around the next pink stitch two rows below

This creates blue vertical bars.

Turn.

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🤍 COLOR A (White) — returns for next stripe

Row 6 — White (SC row)

1. Attach White.
2. CH 1.
3. SC across.
4. Turn.

Row 7 — White (FPDC row)

Same repeat as before:

• SC
• FPDC around the blue stitch two rows below
• SC
• FPDC around the next

Turn.

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🔁 REPEAT PATTERN

Repeat Rows 2–7 as many times as you want.

This will continue building the pink–blue–white sections exactly like your photo.

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📌 STITCH REPEAT VISUALIZED

Row 1 – White SC
Row 2 – Pink SC
Row 3 – Pink FPDC row
Row 4 – Blue SC
Row 5 – Blue FPDC row
Row 6 – White SC
Row 7 – White FPDC row
(Repeat from Row 2)

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🧩 HOW YOUR STITCHES SHOULD LOOK

• Pink FPDC bars sit over white.
• Blue FPDC bars sit over pink.
• White FPDC bars sit over blue.
• The SC rows between each FPDC row create the “stepped” look.

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💡 EXTRA TIPS FOR PERFECTION

✔ Keep FPDC tension slightly loose so bars don’t pull fabric.
✔ Always check that FPDC goes straight downward into the correct stitch.
✔ Carry yarn up the edges to avoid too many ends.
✔ Block the finished piece for perfect straight edges.

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