Since we are using Nexus for releases the release process is as follows (see also http://www.apache.org/dev/publishing-maven-artifacts.html#staging-maven).
1. Prepare the POM
2. Deploy a snapshot
This is useful to verify your settings in ~/.m2/settings.xml (Nexus password and GPG key)
3. Prepare the release
This creates a tag here: http://svn.apache.org/viewvc/directory/skins/tags/
4. Stage the release
This deploys the POM to a staging repository. Go to https://repository.apache.org/index.html#stagingRepositories and close the staging repository.
5. Inform dev list
Inform the dev list to publish (release) the Skins project. After a 4 hr grace period the Skins project can be released, therefor go to https://repository.apache.org/index.html#stagingRepositories and release the staging repository.