I have to write an essay on Animal Farm containing how Napoleon created and maintained power. Any suggestions?

Hey, I have a big exam on this book tomorrow haha
:)

In many ways, Napoleon was only able to get
and maintain power through violence. During the debate over the windmill, Snowball had
won over the rest of the animals until Napoleon ordered the nine dogs (who were the nine
puppies he took away at birth) to attack him and expel him from the farm. If it wasn't
for this, Snowball would most likely have
won.

After he managed to get power, these dogs
continued to be his method of maintaining power - they were like his personal thugs. An
example is the four younger pigs who often challenged Napoleon but, each time they did,
the dogs growled at them to scare them into
silence.

During the Battle of the Windmill, we
are able to clearly see Napoleon's weakness - he is actually a bad leader. In comparison
to Snowball's leadership at the Battle of the Cowshed, many more animals died due to his
lack of leadership skills. During this battle, the animals are extremely close to losing
and, had it not been for Napoleon's dogs, they would have lost. It is down to these
thugs using violence, that they won. Again, in comparison to Snowball, Snowball won
through his ability to lead the animals whereas Napoleon  gets his 'big boys' to use
violence against the farmers.

i hope this helped
:)