The whole of boredom

You need to go through the manuscript one more time to look for . . .

Problem

What to do about it 

Flatness

More specific detail – what type of knife was it? But the detail needs to be relevant too; i.e. revealing of character.

Imprecision

Use your eyes, ears, fingers, nose and tongue against the concrete.

Overwriting

Watch out for a Bellow like list of adjectives.

Pet words

Look out for those sickening repeats (moment, moment, moment).

Character motive

Would she really say that? Why doesn't he simply call the police?

Imbalance

Why do you show that and tell that? Mostly show. Show the key action.

Dialogue 1

Dialogue should have conflict – should have subtext ('You're looking nicely dressed today.') – should reveal character.

Dialogue 2

Should be abbreviated and truncated like real speech.

Music

Hear the rhythm and flow of words. 

PlotOrder of revelation of the story – does it hold the reader? Create tension by the reader wondering will it happen or not.
Authorial voiceKeep your nose out if you can bear to (I can’t). Or at least try to put it into the character. 
TimeHow do you pass the time? Do you skip the right things? Is it clear, is it clumsy? It doesn't have to be linear.
PlaceIs the setting another boring pub? – does the setting reflect or affect the characters or the action.
CharacterIs this someone the reader will want to spend hours to discover? – does the reader give a shit about what happens to him?
Emotional honestyDoes this cut deep? What are you avoiding? What should you really be writing about?
TropesMetaphor and metonym – are they fresh? Do they serve a purpose beyond the writer showing off? 
ClichéGive cliché a wide berth. Also stock phrases.
Elegant variationBut don’t travel too far the alternative route!
Readers’ rightsDon’t tell them what they already know or can guess. Don’t withhold information without good reason or for too long, especially in POV1.
The obvious"Do you understand what he is saying to you?" (Buck Mulligan) You don’t have to spell it out straight away – make the buggers work. Jose Saramago – telling the reader things that are obviously untrue – a letter Richard Reis would never open. 
ViewpointWould she really think of her own leg as shapely? 

Gesture

Should mean something, be unique to the setting or reveal character, not just taking another drag on a cigarette.

Passive constructionsWatch out for too much use of is/was – make the construction active. There were trees along the roadside - trees stood guard along the road.
ConcretenessAccording to John Braine, three categories of word: Freedom (bad), animal (fairly bad), dog (good), although labrador would be better. 
SubplotDon’t introduce minor characters and then forget them. Knead them back into the dough later as subplots that resolve before the main story.
RulesBreak any and all of the rules, so long as you know them. Anything goes, so long as it's deliberate.

It’s like painting a wall. You can’t do it all in one coat and you can’t see the spots when the paint is wet. You need to go over it again and again.