Veggies and Meat
You raise ask this in my review. I'll give you the best answer I have right now, since I'm still learning.
The most important thing is to keep to one topic at a time, and to organize your topics so that you move logically from one to the next. So, with rare exception, you don't make a stew. You serve the meat and veggies on the same plate, but separate. Sometimes you do garnish the beans with bacon, or the beef with scallions, but you do so with a light hand.
Descriptions of setting go at the start of a scene, or in a break in action within a scene. You can add adjectives here and there ('a grey rock', 'deep, ominous shadows', 'rushing brook'), but you need to respect the pace of the narrative. If you were a storyteller giving the story orally, would you be speaking expansively or driving forward? Shape your topics and your phrase, sentence, and paragraph structure around that pace.
A couple of specifics out of the review:
But here, it's a prelude to nothing more than the pallid 'scent' of the creatures.
This is intended to show his humor which he uses when he is stressed. What gave the impression that their scent is "pallid"?
It's not that their scent is pallid. It's that the word 'scent' is pallid (which is why I quoted it). 'scent' is a milder word than 'aroma', 'aroma' milder than 'smell', 'smell' milder than 'reek'. I'm not sure that any of these is quite the word you want, but hounds follow scents. People recoil from a stench.
Kobolds are somewhat sentient, but mostly they are like ants or bees following their queen or in this case king.
You can give us a clue by describing them as a swarm or using a verb that describes hive-like behavior.
What are 'his powers'? That's a generic description, a column heading on a table whose rows are Supeman, TI Hulk, Spiderman, and so forth. Can you give us some clue as to what they are?
I give more information about his powers later in this chapter as to what his powers are. I didn't want to dump information into this first paragraph and it was just intended to show that he had some powers.
But by genericizing them, you're leaving that column for us to fill in.
Ironically, if it were 'power' (singular) the question would be different: what special power does Skrune have?
I'm not suggesting an information dump. This reader would like a clue or a tease. What power(s) should he have. (Don't tell me. List them out yourself.) What would he want to be able to do in that situation? Why? What would he try to do? What would the result be? If his action should result in a glowing finger, why? What is it indicating?
Now, how do you tell us that in the fewest words? Does the effort tire him further?
hoped his teammates were safe elsewhere in the forest. The sound of kobold chatter told him that he was not.
My confusion here is that you say he hopes =they= are safe. The kobold chatter reveals danger, and since the last safe/endangered question is about the teammates, that's the first place I try to attach the danger.
You write 'sound of kobold chatter'. What does 'sound of' contribute? For me, it makes the kobold chatter more remote in the presentation, and I read it as being more remote in the physical layout of the scene.
Instead of moving the kobold chatter to the object of 'of', why not present it directly as 'kobold chatter' or 'chatter of kobolds'? 'chatter' is a strong, colorful word, and if you don't hide it behind the preposition, it and the kobolds can support some garnish, that is, some description. They practically ask for it. 'sharp chatter' or 'short, swarming kobolds', or 'angry kobolds' or ... .
I look at it as he had a chance to take a break, but he sighs because he has to move even though he is too tired to do so. Can you please give me an example of how you would do it?
Well, I don't play soccer. Not a sports guy, and the only 'flow' sport I even remotely care to watch is hockey. That said, what kind of guy is Skrune? Does the rise of adrenaline make the deadly threat into pleasurable excitement? Does the exhaustion cancel it? Is it 'not one more job to do?', which would call forth a sigh?
Does Skrune believe that he's in real danger of death or defeat? If not, then he might sigh. But if his eyes are darting for an escape or focussed on a threat to be defeated now, I don't think he'll sigh. He might draw a deep breath in preparation.
As I write this, another question comes to me. What is Skrune trying to do now? Escape? Escape to where? How? What event will mean safety? What event will mean success for the mission? What event will mean failure? Aren't these essential parts of Skrune's circumstance, and don't they define his options and give meaning to his choices?
You don't need to answer these explicitly. But people, even desperate people, act with purpose and intent. We can't understand them unless we have some glimmering of both purpose and intent. Discovering (revealing) purpose and intent is a major storytelling tool. What is the villian trying to do? How is this move going to help the hero?
Classic example: A man walks into a bar and asks for a glass of water. The bartender reaches under the bar, pulls out a pistol, and points it at the man. The man pauses for a moment, says "Thank you," turns and walks out of the bar. What just happened? This is a brainteaser, but it is also a story, and the key to the problem is discovering for yourself purpose and intent.
Hope this helps.