The boring sequence can be summarized as follows...
1Secure the fabric with stitching around the planned hole.
2Cut the fabric – one or more lines, small movements (1.2–1.5 mm).
3Pull out the loose fabric with manual or zigzag stitches.
4Finish the edges with satin.
How many borer cuts do you need for various fabrics? Only practice can tell. Cutting cotton is relatively easy. Modern fabrics with plastic yarn content may require more cuts closer together. Among the typical cutting patterns used for single holes are...