If you have any specific questions please let me know. Some general rules i have

• write about something that touches you or where you are interested in
• ask question for your readers: "What's in it for me?" -> give value
• keep it entertaining in terms of text - picture - text -..
• easy to digest - split into paragraphs, use understandable wording, good sentence length
• interesting title for curiosity
• interesting first picture for preview in feed
• build a narrative whenever possible
• be yourself
• look for self-improvement from post to post
• use the power or information density of pictures

There are many good articles about writing, formatting, media elements and so on here on Steemit, just search. Thank you!