Available in the smeSpire Best Practice Catalogue a report containing operational instructions about how to create INSPIRE compliant metadata, relevant to a dataset belonging to INSPIRE Annex II/III data themes, containing both discovery metadata (Commission Regulation (EC) No. 1205/2008) and metadata for interoperability (Commission Regulation (EU) No 1089/2010). Also available an example xml metadata file. The Best Practice is available here

More information.