Hello, I’m Yi Yuan. I read your post, and you described your group’s learning design in a good way, you taking the hearing-impaired and English language learners into consideration. For hearing-impaired people, you use drawings or pictures to show them. That’s a good point. I think the hearing-impaired tend to prefer direct means of expression, such as writing or sign language. I think you can organize the process, requirements and so on into a document before the activity and send it to their email in advance to ensure that they fully understand the content of the class. About the English language learner. I think you can explain the key words in advance. For example, before teaching painting skills, teach students some key words of painting tools. This will help them understand class content sooner. Here is an article about how to make a lesson plan for ELL. I hope it will help you.
https://www.colorincolorado.org/article/how-develop-lesson-plan-includes-ells