bitbake-layers create-layer --help
NOTE: Starting bitbake server...
usage: bitbake-layers create-layer [-h] [--priority PRIORITY]
                                   [--example-recipe-name EXAMPLERECIPE]
                                   [--example-recipe-version VERSION]
                                   layerdir

Create a basic layer

positional arguments:
  layerdir              Layer directory to create

optional arguments:
  -h, --help            show this help message and exit
  --priority PRIORITY, -p PRIORITY
                        Layer directory to create
  --example-recipe-name EXAMPLERECIPE, -e EXAMPLERECIPE
                        Filename of the example recipe
  --example-recipe-version VERSION, -v VERSION
                        Version number for the example recipe

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+ bitbake-layers create-layer --priority 6 --example-recipe-name example --example-recipe-version 0.1 ../meta-my-yocto-layer
NOTE: Starting bitbake server...
Add your new layer with 'bitbake-layers add-layer ../meta-my-yocto-layer'
+ tree ../meta-my-yocto-layer
../meta-my-yocto-layer
├── conf
│   └── layer.conf
├── COPYING.MIT
├── README
└── recipes-example
    └── example
        └── example_0.1.bb

3 directories, 4 files
+ cat ../meta-my-yocto-layer/conf/layer.conf
# We have a conf and classes directory, add to BBPATH
BBPATH .= ":${LAYERDIR}"

# We have recipes-* directories, add to BBFILES
BBFILES += "${LAYERDIR}/recipes-*/*/*.bb \
            ${LAYERDIR}/recipes-*/*/*.bbappend"

BBFILE_COLLECTIONS += "../meta-my-yocto-layer"
BBFILE_PATTERN_../meta-my-yocto-layer = "^${LAYERDIR}/"
BBFILE_PRIORITY_../meta-my-yocto-layer = "6"

LAYERDEPENDS_../meta-my-yocto-layer = "core"
LAYERSERIES_COMPAT_../meta-my-yocto-layer = "sumo"

----------------------

is this valid?

BBFILE_PATTERN_../meta-my-yocto-layer