Thanks everyone for the suggestions in my last query. I Hope, also for this query I will get the best opinions.
I have done On-page SEO for a website (with including Title, mega tags, meta description) and after that I am creating backlinks along with the focused keyword for a long time. For a time there was an increment in the ranking of some keywords, but since last four weeks the ranking has dropped.
Could anyone suggest me how Can I identify the issues ?