Hey there, and welcome to the section! =)
A fairly decent beginning I feel to the story. Already a different way to the typical trainer fic in protrayal so that's a plus, and the writing is decent too. Neat description and writing style, and I quite like Quilava as well. The battle was fine (enjoyable to read) as was the training sequence too.
There's some small typos here and there, but I'll just start from the top. At any rate mistakes are consistent which is always good.
The last sentence sounded a bit awkward to me there. A bit abrupt in the use of pauses. For instance the comma after 'my mouth' creates an uncomfortable sounding pause even if it is before 'and'. I also feel you could reword after 'attempting to dodge' (e.g. '...to dodge but only manage to get...' or the such). One good way to check is to read it aloud and see how something sounds and work from there in editing, I find.
Lastly, a consistent mistake in its/it's. The former is the possessive one you want (its wing, its name, etc), while it's is a shortening for 'it is'. It's something you do throughout the chapter so be sure to fix those errors.
Again, it happens a few times so watch out for that.
The plus sign vanished, and the green forest returned.
I also wonder how he knows it was a dream just before that part of the story starts.
Watch for the flow of sentences due to comma use again at the end. And lastly note that with numbers you'd typically want to write out anything smaller than 100 (so four rather than 4).
A good start, all in all. Good luck with the rest of your fic!