Meredith Lavine, Artfulresumes.com:
We suggest making a skills matrix of sorts. This is a technique I use on most of my clients when eliciting their transferable skill sets. Start by making a chart with the following headings: Skill, description of skill, how it is applied, level of proficiency and priority (high, med, low) in the context of the position you are seeking.
For my technical clients, we make a more granular set of skills labeled by sub-categories, such as hardware, software, operating systems, etc.
For librarians, you may want to use such categories like management, ILS packages, technical and subject matter expertise. These skills get turned into fragments under your Summary of Qualifications or bullets on a core competencies list, or, if appropriate, a separate section detailing your technical competencies.