The first draft is always rubbish.
The second draft is significantly better as you take out the repetitions, see the faults in the plot and characters etc.
Reading books on writing by others is really useful in developing your own technique.
Spelling and grammar are important. Colin Dexter’s Plenary Speech at the Winchester Conference a few years back on the importance of letting a good dictionary into your life was hilarious.
To write is to live another life, to visit places you wouldn’t normally go to and, indeed, to invent your own worlds. To write is to put yourself in your characters’ heads and to discover many different perspectives (you’ve got to be able to have some sympathy with your characters, even the villains, to be able to write about them sympathetically).
There was an author called A. Symes
Who wrote of the fairy world’s times
Whose main stars rebelled
And caused merry hell
Whose spells always came with some rhymes.
To write sympathetically means believing in your characters and to show them acting and speaking convincingly.