one of my favorite prompting tricks is having a system prompt interjection before the AI's response, e.g. with chatml
<|im_start|>user
last user message<|im_end|>
<|im_start|>system
some instructions on how to write the response<|im_end|>
<|im_start|>assistant
but I saw when trying this sort of thing with l3 and it's prompt format it led to it regurgitating earlier messages verbatim. I get much better results with a "style guide" role instead of system, try it out if you do something similar