Maybe I Want My Readers to Be Completely Lost Throughout My Novel. Ever Think of That?!

          One of the biggest problems I know all authors make is not giving the reader enough information. We're so caught up in our own heads, we don't realize that we've completely left out the part where aliens are a common thing and that's why our MC wasn't surprised when they met the SC. It's just so blindingly obvious to us, but to someone who has never heard of your story they'll be infinitely confused. "Shouldn't he be surprised this chick is blue and has a tail?"
          It's always useful to have a friend to read your story. They can ask you questions about things they're confused about which you can in turn go and add in to your story - unless it's something you want them to be confused about, (but you have to be sure you give at least a tiny bit of clarification later. Can make it as subtle as you want - makes the reader feel oh so special when they figure it out). If you don't have a friend to read it for you, then you need to get one. Or if you prefer no one read it, then you need to question yourself as you read through your work. Did I already explain why this is true, why my MC is behaving this way - if not, do I explain it later? It's easy to get lost in your own thoughts, but since you're hoping others will enjoy your works and they'll actually pay money for it, I suggest you keep in mind that it isn't for you. It's for your readers, and they want to know what the deuce is happening.