How to Do Foundation Paper Piecing (FPP)

Foundation paper piecing is sewing fabric directly onto a printed paper template, stitching exactly on the numbered lines, so sharp points and awkward angles come out precise every time — you sew the drawing, and the drawing becomes the block. It’s how the Union Jack canton on our big Australian flag quilt is built: four paper-pieced quadrant blocks that land in true 2:3 flag proportion, where eyeballing it would never do.

Step by step

Print the template at exactly 100% — no “fit to page”, ever — and measure the printed test square or check line before you cut a thing. A template printed at 97% makes a block at 97%, and four of them make a canton that fits nothing.
Read the numbers before you sew: every section on the template is numbered, and you build the block strictly in number order, 1, 2, 3 and onward. The numbers feel back-to-front at first because you’re looking at the block’s mirror image — the finished block appears on the fabric side, flipped from the paper.
Cut your fabric pieces generously — a good centimetre or more larger than each section on every side. Paper piecing wastes a little fabric by design; trying to economise with exact-size pieces is the one reliable way to end up with a corner uncovered.
Place the fabric for section 1 on the unprinted side of the paper, right side facing away from the paper, covering the whole section plus its seam allowances. Hold it up to the light to check the coverage — light through the paper shows you exactly where the fabric sits.
Place the fabric for section 2 right sides together with the first, edges aligned along the seam line between sections 1 and 2. Pin or hold firmly, flip the whole thing paper-side up, and stitch exactly on the printed line with a short stitch length — about 1.5 mm — which also perforates the paper for easy removal later.
Fold the paper back along the stitching line, trim the seam allowance to a neat 6 mm (a ruler against the folded paper makes this foolproof), then fold the paper flat again and press the new fabric piece open with a fingertip or a dry iron. Press every section as you go — the block stays crisp and honest.
Carry on in number order: position the next fabric to cover the next section, stitch on its line, trim, press. Work slowly around tight points and skinny triangles — those fiddly shapes are exactly what paper piecing exists to tame, and they come out sharp if you keep your pieces oversized and your stitching on the line.
When every section is covered, trim the block to the template’s outer line, which already includes its seam allowance, and give it a final press. Our flag canton is four of these blocks joined together — check each one against the next before joining, because the diagonals only march across all four if every quadrant is true.
Leave the paper in while you join blocks — it keeps everything stable and the seams honest — then remove it just before layering the quilt: fold along each perforated line and tear gently away, using tweezers for any stubborn crumbs in the seam allowances. Short stitches, patience, and never yank against the stitching.

Patterns that use it

Australian Flag Quilt Pattern | Foundation Paper Piecing, 120 x 80 cm Flag Panel, Aussie Quilt, Digital PDF

Only 1 product in the live catalogue uses foundation paper piecing — linked above; the rest of its flag is appliqué, which has its own page in the library.

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Common mistakes

Printing the template on “fit to page” instead of exactly 100%. A template printed at 97% makes a block at 97%, and blocks that size join up with nothing — measure the test square before you cut a thing.
Cutting fabric pieces exactly the size of their sections to save fabric. Paper piecing needs that generous centimetre on every side; exact-size pieces are the one reliable way to end up with a corner uncovered.
Sewing the sections out of number order because the next one looks easier. The numbers build the block in the only order that works, back-to-front as it feels — skip ahead and the fabrics can’t lie flat.

Tina’s tips

Hold every placed piece up to the light before you stitch it. The paper goes translucent and shows you exactly where the fabric sits, which settles all the guesswork in one glance.
Sew your very first block slowly, start to finish, before cutting pieces for a second. The mirror-image thinking clicks about halfway through one block, and after that the rest feel easy.