Definitely attend writing workshops, meet ups and online classes, where you will meet other writers. Most authors are very willing to help each other out. Also, don't push yourself for a daily word or page count unless you must - writing can't be forced. But do sit down with paper and pen or at your computer and do something writing related every day - journaling, long emails, a blog, research, writing exercises, etc.
Historical Fiction is nearly always a blend of the real and the fictional. Many readers are curious what was real and what was invented by the author. Look for the author's note or historical notes, where the author will answer that question. My debut historical fiction was mostly factual, but some names were invented, some dates were adjusted to fit the plot arc, and dialog was entirely my creation with the exception of several primary source letters.
Studies have shown, as has my personal experience as a reader, that people notice a book first based upon the cover and title. Only then do they pick it up, check if they know the author, read the blurb on the back cover, etc. before reading the first few pages. If you want someone to buy your book, don't skimp on the cover design, choose a memorable title, and hire a good copyeditor.
