history 16 markers

hi what's the best advice for history 16 markers as they're not my best , also how many marks would you need for a grade 8
and how many marks would you need for a grade 7(in history)

Are these the essays for IGCSE? If so, they are typically three factor questions. You're given a factor and asked how far you agree that X is the most significant.... So you need to write about three things. But you also need to drive an argument. Do you agree that the Cuban Missile Crisis was the most significant event of the 1960s during the Cold War? If yes, why do you agree? Why is it more significant than Prague Spring or the Berlin Wall being built?

hi what's the best advice for history 16 markers as they're not my best , also how many marks would you need for a grade 8
and how many marks would you need for a grade 7(in history)

Depends on your exam board/ topics for marks, which exam board do you do?

hi ! i do edexcel
topics : medicine in britain and the western front(already did this gcse this week) , cold war , elizabeth , weimar and nazi germany

Same, but different topics! So, to find the grade boundaries check on the edexcel website and you should be able to see what each topic is (all are relatively similar grades anyways).
As for writing a 16 marker, you should aim for an introduction, 3 paragraphs and a justified one-sided conclusion
Your introduction would outline your argument, (eg. I disagree/ agree that x is the most important impact of y) and then also just state the key points you will use in your paragraphs
-For the Nazi Germany paper your intro should be more like "I disagree/agree with the ideas in this source, as it states (just outline the source's argument)
Your paragraphs should include as much precise knowledge as possible, and ensure that you always link back to the statement (therefore...) and begin with stating (some may (dis)agree because...)
And your conclusion should be strong and one-sided, and prove that your original statement is the strongest argument (KEEP WITH WHAT YOU SAID IN THE INTRO- EVEN IF YOU DISAGREE!)
Wishing you the best of luck!

Same, but different topics! So, to find the grade boundaries check on the edexcel website and you should be able to see what each topic is (all are relatively similar grades anyways).
As for writing a 16 marker, you should aim for an introduction, 3 paragraphs and a justified one-sided conclusion
Your introduction would outline your argument, (eg. I disagree/ agree that x is the most important impact of y) and then also just state the key points you will use in your paragraphs
-For the Nazi Germany paper your intro should be more like "I disagree/agree with the ideas in this source, as it states (just outline the source's argument)
Your paragraphs should include as much precise knowledge as possible, and ensure that you always link back to the statement (therefore...) and begin with stating (some may (dis)agree because...)
And your conclusion should be strong and one-sided, and prove that your original statement is the strongest argument (KEEP WITH WHAT YOU SAID IN THE INTRO- EVEN IF YOU DISAGREE!)
Wishing you the best of luck!

also is it okay if i do two very long paragraphs and introduction and a conclusion? Because i did this in my medicine gcse this week and i hope it's enough!

I think that should be fine! As long as you gave an agree and a disagree