I left out a few other things I would like to include in an email. Thank you very much.

1) Unfortunately, we have just sent in our Comenius proposal for a science project on biodiversity in water with a German and a French school.
2) However,being an English teacher myself, I would (very much) like my students to be involved in an email partnership and subsequently in a student exchange programme with an English school.
3) In addition, my students will have to learn a subject in English, probably science, in their last year of high school; therefore, they will profit a lot from a partnership between our schools.
4) I was thinking of including about 20 sixteen-year-old students who are preparing for their PET certification...
(We have already corrected this part).

By the way, do you use the word "coloured pencil" or "pastel" when drawing?
A red coloured pencil
a black ball-point pen

To include these additional points in your email, you can follow these steps:

1) Start by addressing the recipient of the email. For example, "Dear [Recipient's Name],"

2) Begin with a positive and friendly tone, expressing your gratitude. For example, "Thank you very much for considering our Comenius proposal for a science project on biodiversity in water with a German and a French school."

3) State that you have an additional request or idea by introducing the first point. For example, "However, as an English teacher myself, I would like to explore the possibility of involving my students in an email partnership and student exchange programme with an English school."

4) Explain the potential benefits for your students by highlighting the second and third points. For example, "Moreover, my students will greatly benefit from a partnership between our schools since they will have to learn a subject in English, most likely science, in their final year of high school."

5) Transition to the next point by signaling a new idea. For example, "Additionally, I was thinking of including about 20 sixteen-year-old students who are preparing for their PET certification..."

6) Conclude the email by expressing your enthusiasm and gratitude again. For example, "Thank you for considering these additional ideas. I am excited about the potential collaboration between our schools and the opportunities it will provide for our students."

Regarding your second question about drawing, the term "coloured pencil" is commonly used to refer to a pencil that contains colored pigment. In contrast, "pastel" typically refers to a type of art medium that comes in stick form and contains powdered pigment. So if you are using a red pencil, it would be referred to as a "red coloured pencil," while if you are using a black ball-point pen, you would simply describe it as a "black ball-point pen."