I have an excellent combination of skills for this project: I have been teaching Spanish to Americans for 20 years. I taught both adults and teens in all levels of Spanish. I traveled to Spain numerous times, and I stayed for extended periods in several Latin American countries. My knowledge of language extends to English, as I also hold an advanced degree in English with teaching certifications for both languages, ESL, and online instruction. In addition to Spanish and English teaching in public education, I am preparing to enter Technical Communication. Therefore, I understand how to write instructions, write text books, design web pages, design learning modules, and much more related to making information easy to understand and navigate.
After viewing your examples, I see many issues that I can fix. The style is too elevated for every audience, for one. Additionally, individuals wanting to learn a language do not necessarily know what a tag, a superlative, or even an adjective is. One very important element for Americans learning a foreign language is word order. They need to see how the words move to new places. They also need the examples in everyday language: Most people don't talk about Columbus daily, and most Americans don't know who Carlistas are. Finally, the examples mix up a lot of tenses together-- confusing. I can fix this and more easily.
Contact me for my full resume with past employers and current MA in Technical Communication skills and references.