Hi,
Send me a PM and I can provide you with a Cover Letter template as well as examples across a range of companies.
Here's some guidance in the meantime
Then, of course, you need an intro paragraph summarizing your interest + reasons why as well as a closing paragraph doing the same with new language.
Hi, I would not struggle with templates for application material and, in particular, for CL, whose value is pretty low. I would suggest a clean and minimal word letter, 0.5/0.75 page long.
Best,
Antonello
Check out enhancv (google it) for some nice templates. It costs a small fee but is worth it.
Otherwise standard one page cover letter with ample margins (1 inch at least on all sides) is good.
Feel free to contact me, then we can have a call on this topic :)