My advice to you would be to listen to two Bach fugues before every time you write. They really help set the mood. Your writing sounds very fresh and madrigal-ish, but has very little fugue in it.
There are some rules you should follow, too, in how to write a reply. For instance, a good reply to E-C-B-F#-B-F#-G (the subject you used) might be B-E-D-C#-F#-C#-D. normally it's more about contour than the notes, and the first and fifth usually interchange.
I wrote a short example. Try to listen to how the voices enter, as this is usually the most "dramatic" part of a fugue.
http://www.youngcomposers.com/forum/attachment.php?attachmentid=7586&stc=1&d=1185416212
http://www.youngcomposers.com/forum/attachment.php?attachmentid=7587&stc=1&d=1185416212
Your gusto and rhythmic inventiveness are very much appreciated, though!
Ariel
Eminor - example.MID
Eminor- example.mus