This should be the third paragraph of your letter of interest. Here you should mention all of your credentials including you education, professional affiliations, experiences and awards. You should also mention any assets you have that will help you should you recieve the commission. If you are not a local artist, it is important to mention how you will overcome the distance. Do you have a space in which to complete the work? Do you have experience with shipping your work? Are you willing to travel to the destination and see the project through to completion? What do you bring to the table in addition to your creative abilities?
Next: Letter of Interest - Conclusion