well, it would help, which error you get...
probably this one?
this depends on you
to publish your source code (i.e. the aia file) publish in the gallery
to publish the apk file, publish it on Google Play, see also Uploading Your Apps to Google Play
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by 
Taifun.