It is always a good idea to plan your answer before you begin writing. Having a plan means you will leave space to make all the points you want to, rather than risk running out of ideas.
Here is a plan you could use for your answer (though you will need to add detailed examination of language for each section):
Here are two sample answers that refer to Point 1 of the essay plan.
Hill uses the weather in this extract to make it threatening and dangerous. It's when Kipps is waiting on the causeway for Keckwick and she shows that the sea mist has surrounded or 'enveloped' the narrator. This word shows he is wrapped up in the mist and cannot see anything. This is a bit scary. There is a simile that shows the mist is 'like a cobwebby thing' and this adds to the sense of danger and threat. The last sentences show how Kipps is affected deeply by the weather.
In this extract we see Arthur Kipps stepping out from Eel Marsh House to meet Keckwick on the causeway. The isolation of the house is emphasised when the sea mist falls and 'enveloped everything.' Hill uses alliteration to highlight how completely the big house has been disguised by the mist. This makes Arthur seem even more alone and at risk. The weather reflects Arthur's mood here - he is anxious and feeling trapped. Using this pathetic fallacy Hill shows how 'confused', 'unnerved' and 'disorientated' the main character is. The mist seems to have 'millions of live fingers', a disturbing image that makes the reader fear for Kipps' safety. In particular the adjective 'live' seems unusual and draws our attention to the deaths that permeate the story.
Read over the assessment objectives again. Then use the plan and everything you have learned in this revision section to write your own timed answer.