Composite use the following scheme:
composite [options ...] image [[options ....] mask] image
The simplest way to use this utility is to type its name as a command line. This will show the valid parameters for composite as below:
-affine matrix affine transform matrix -authenticate value decrypt image with this password -blend geometry blend images -blue-primary point chromaticity blue primary point -channel type apply option to select image channels -colors value preferred number of colors in the image -colorspace type alternate image colorspace -comment string annotate image with comment -compose operator composite operator -compress type type of pixel compression -debug events display copious debugging ...