@umbranian Of course! (For anybody curious, his book is "OC x IQ- The Knight.")
1. Usually, when I write, I keep an app up like Grammarly. (It's free and I recommend it! :D) When I'm writing the book, I usually catch most of my mistakes but miss quite a lot (My readers can agree, lol) So I usually use Grammarly to find mistakes that I missed. (Be warned, if you don't have premium, Grammarly will be a jerk and not point out other mistakes, so proofread it before publishing it)
2. Do not be afraid to take a break, however, do not leave your book for too long. Breaks benefit you, and your readers. Breaks benefit you because you stay in peak condition when writing, and that helps the reader out because that promises them quality work (Unless you just write for you to read it, that's alright. Speaking of reading your own book, I'll get to that soon.)
Do not leave your book for too long, readers will probably drop it if you leave without a trace, so if you have to leave for a longer time, put up an announcement chapter on your book and on your profile stating that.
3. Always accept constructive criticism from readers. Your readers can often see a lot more in your book than you can, so always accept constructive criticism from them, and that can make your book a LOT better. If they're just criticizing for the sake of scrutiny, ignore it, people are just jerks sometimes.
4. Do not be afraid to read your own book and edit mistakes. I do this all the time, a lot... I read my book, then start editing out mistakes that I caught while reading it. (It's a good alternative for constructive criticism, but for good measure, I'd do both).
5. Don't be afraid to get creative, when writers realize that their book is their own world and they can get as creative as they want, they can reach new heights. (Some readers like grounded creativity sometimes though, so be careful with it, try to keep it a bit simple, but still...Get creative :D) That's all I have (Ran out of words :C)!