My understanding of the Visa process is that ALL visas are treated seperatly, and are not influenced by previous applications. As long as you are honest on your application form then it shouldn't prejudice this application.
The only time that a previous application may be detrimental to a new application is when the previous application is miss-used, for example, overstaying a 6 month period, or not getting married in a Fiance visa and then being blacklisted by the embassy.
All Visa applications are treated as individual cases so you should be ok.
