I think that I can categorize liquify tool to Photoshop Basics because using liquify tool is so simple and you can do with this tool huge things like editing body shape also you will use this tool during portrait retouching or some type of photo manipulation.
***Video Tutorial on Page 2***
**Please note that video tutorial is not full body retouch tutorial. Purpose of this video tutorial is just to show you each of liquify tool.**
All you need to do is:
1. Go to Filter-> Liquify
2. Choose one of the brushes in menu on left:
Forward Warp tool - Pushes pixels forward as you drag.
Reconstruct tool - Reverses the distortion you’ve already added, as you hold down the mouse button and drag.
Twirl Clockwise tool - Rotates pixels clockwise as you hold down the mouse button or drag. To twirl pixels counterclockwise, hold down Alt (Windows) or Option (Mac OS) as you hold down the mouse button or drag.
Pucker tool - Moves pixels toward the center of the brush area as you hold down the mouse button or drag.
Bloat tool - Moves pixels away from the center of the brush area as you hold down the mouse button or drag.
Push Left tool - Moves pixels to the left when you drag the tool straight up (pixels move to the right if you drag down). You can also drag clockwise around an object to increase its size, or drag counterclockwise to decrease its size. To push pixels right when you drag straight up (or to move pixels left when you drag down), hold down Alt (Windows) or Option (Mac OS) as you drag.
Using the Freeze Mask tool - Select the Freeze Mask tool and drag over the area you want to protect. By freezing areas of the preview image, you protect those areas from changes.
3. Set liquify brush in menu on right side:
Brush Size - Sets the width of the brush you’ll use to distort the image.
Brush Density - Controls how a brush feathers at the edge. An effect is strongest in the center of the brush and lighter at the edge.
Brush Pressure - Sets the speed at which distortions are made when you drag a tool in the preview image. Using a low brush pressure makes changes occur more slowly, so it’s easier to stop them at exactly the right moment.
Brush Rate - Sets the speed at which distortions are applied when you keep a tool (such as the Twirl tool) stationary in the preview image. The higher the setting, the greater the speed at which distortions are applied.