Crochet problems are easier to solve when you identify what changed. A narrowing rectangle often points to missing stitches. A tight starting edge may come from the foundation chain. A project that is the wrong size can result from gauge even when every stitch is correct.
Before undoing a large section, lay the work flat, count the stitches, and compare the latest rows with the pattern. This guide uses US terminology and focuses on ordinary flat crochet fabric; intentionally shaped or textured patterns may behave differently.
The piece becomes narrower
You may be missing the first or last stitch of a row. Edge stitches can look compressed, especially before you learn to recognize the top V shapes.
Count the current row and compare it with the required total. Place a locking marker in the first and last stitch of the next correct row, then move those markers as you work. If you have already lost stitches, undo to the last correct row and remake the affected section.
Check the pattern’s turning-chain rule. When a turning chain counts as a stitch, the way you begin and end the row differs from a pattern where it does not count.
The piece becomes wider
An extra stitch at the edge is a common cause. You might be working into both a counted turning chain and an additional stitch, or making two stitches in one place by accident.
Use your stitch count to locate the first incorrect row. Follow the pattern’s exact directions for the first stitch, last stitch, and turning chain. Do not assume a rule from a different pattern applies here.
Avoid hiding the problem by skipping a random stitch later. That may restore the count while leaving an uneven edge or an unexpected hole.
The starting edge is too tight
If later rows are wider than the foundation even with correct counts, your starting chains may be too small. Try making the chain with a slightly larger hook, then return to the intended hook for the first row.
Make a short test strip before restarting a large project. Relax the yarn in your guiding hand and form each loop on the hook’s shaft instead of tightening it around the narrow throat. Some stitch patterns naturally curl, so compare the fabric with the intended pattern as well.
Stitches are difficult to work into
Very tight tension, a small hook, or split yarn can make insertion difficult. Inspect the stitch before pushing harder. If the hook has entered between yarn plies, pull it out and insert it through the correct opening.
Let the working yarn move freely and try a few slower stitches. A different hook shape or smoother practice yarn may help. Change hook size only after considering its effect on gauge and the finished fabric.
Holes appear where they should not
Look for a missed stitch, an accidental chain, or a stitch worked into the wrong space. Also check whether you are consistently working under both top loops when the pattern calls for that.
Some holes are intentional, particularly in lace and granny-square patterns. Compare the suspect area with the same repeat elsewhere before undoing it. If it is an error, remove the stitches back to that point and rebuild the repeat.
The finished size is wrong
Correct stitch counts do not guarantee correct measurements. Your loops may be larger or smaller than the designer’s, or a substituted yarn may behave differently.
Make a washed and dried gauge swatch in the specified stitch pattern. Adjust the hook if needed and measure again. Blocking can improve shape, but it is not a reliable way to force a substantially incorrect size into place.
Loose ends come out after use
Very short tails and a single loose pass through the fabric can work their way free. Leave enough yarn to weave through several stitches, then change direction through a neighboring path without distorting the fabric.
Inspect the ends after the first wash, following the yarn’s care label. Slippery fibers may require extra attention. Keeping a yarn needle beside your project makes finishing part of the routine rather than an afterthought.
Build a habit that catches errors early
Count at the end of a row, mark boundaries, and place the fabric flat every few rows. These short checks make problems easier to locate. Once you understand the cause, correcting a small section becomes a normal part of making a piece you are happy to use.