Experience section is listed directly after the objective section in resume. This format is used when the person with sufficient work experience in similar field is applying for more superior position in other company. In this case, with such extensive experience, employer will consider that the applicant already possesses the job related skills and does not waste his time on viewing this section. Your relevant work experiences will win you the desired job.
Once you have an idea of what you need, it will be easier to narrow down the options. Most software packages offer templates, but the software can be quite expensive. Templates can be purchased individually online, as well. But as a small business owner, you know that running a business is expensive, and you want to cut costs whenever you can. The Internet is filled with tools to help run your business, including free invoice templates.