Dressmaker currently uses keyboard and mouse. A developer says native controller support is not available yet, even though the game runs smoothly on Steam Deck. Steam also lists a Mouse Only Option and play without Quick Time Events.

Controls documented in the available guides

TaskInput described
MeasureDrag the measuring tape over the client's bust, waist and hips.
Choose parts and fabricSelect a bodice, sleeves, skirt and fabric in the sketchbook and inventory.
Inspect a pattern pieceHover to see its name and mannequin position.
Sew a cornerPress S to slow down; Sew Assist is available in Settings.
Place accessoriesTurn on Accessory Rotation Gizmo in Settings for X, Y and Z handles.

The available official material does not provide a complete keyboard shortcut map. Follow the prompts in your current build for actions not listed here; a prototype control tip may differ from the released game. For the full crafting sequence, use the beginner tutorial. For gamepad and Steam Deck details, see controller support.

Sources: Steam store, Into Indie Games walkthrough.