From what I can tell you are playing in the C# pentatonic minor shape but you're not using any other scales. May be you could explore the E Major scale a little more, and other modes of the E Major key. Also.. try to make use of the underlying chords.. when the backing track goes down in pitch, may be you could follow it down.. or go against it and go up.

Another thing to remember is that you can skip notes in a scale.. that is how the pentatonic minor shape is formed. It takes the C#minor scale and misses two of the notes along the way making it only 5 notes (or tones).. hence penta meaning 5 and tonic meaning (loosely) tone. 5-tone scale.

One of my signature licks, in related to this key, goes like this:


|-------------------|
|--------12--10--9--|
|-----9-------------|
|--9----------------|
|-------------------|
|-------------------|


It's something I came up with once in another piece of music that has stuck with me and has become part of my signature style. So you just have to fiddle around and find little things like that.