I urge you to invest in your book.
What does that mean? It means a lot of things.
First, you need to invest the time to do it right. Take your time writing and researching your book. Revise it. Get feedback. Are there holes in your plotline? If so, fix them! Are your characters flat? Fill them out! A rough draft isn’t enough.
Get it edited. Allow enough time for a good edit, don’t expect 150,000 words to be done overnight. Give your editor the time to go through it carefully. Rush jobs usually result in something being missed because they were rushed. Can you do your best work when you’re in a rush? Schedule enough time in your production timetable to allow for a proper edit. Then add a little bit more for bumps in the road, like an unplanned for revision, or a family emergency. It’s better to be ready ahead of time than to be squeezed for time at the end.
Proofread it. After you, your editor, and your trusted beta readers have all read it, get someone else to go over it for errors. If you can afford it, pay a professional. Trust me, even after all those others have gone over it, there will still be some errors. No one is perfect enough to catch everything. Could you? If you were given a 50,000 word manuscript, could you catch every single error? Especially if the author wanted it in a week or two? That’s why the more sets of eyes you have go over your book, the better. And spell check doesn’t catch everything, either. It doesn’t know the difference between there, their and they’re. Or to and too. Or rein and reign. Or wait and weight. Or right and write. All it knows is if they’re spelled correctly.
Get a good cover design. If you don’t know the first thing about designing a cover that looks good, find someone who does. It’s worth the money to have one that catches the eye. People do judge a book by its cover, whatever they may say.
Your book represents you. This is your product that you want people to buy. Putting a substandard book out there can create a reputation that will follow you no matter how much work you put into later publications. Today’s readers aren’t shy about complaining in a review about shoddy writing or editing (or lack thereof). If you fix your book later, those reviews are still there. Those readers have already told their friends and the damage has been done.
I know I harp about this repeatedly here, but I can’t emphasize this enough. As an author, your book is you. Do you want to go out in public with a big smudge on your face? Of course not! So why let your book do the same? Yes, editing and a good cover can cost a lot of money, depending on who you hire and the length of your book. But isn’t your book worth some scrimping? Isn’t your reputation as an author worth it? Many editors, like me, offer payment plans. Payment plans, however, don’t work well if you’re on a quick deadline (just another reason to plan well for your production time). We also offer a discount for payment in full, so there are multiple ways to save some money on editing services. So invest in your book, both with time and money if possible.
You want to put your best book forward.