Thanks guys!
I did use a sustain pedal throughout the entire piece. XD
But you're quite right, I did tape directly from the keyboard into a microphone. I have a USB->MIDI interface but havent been able to record a clean/mistake free version. Ive got FL and have managed to get it to record so i'll give that a go.
For the actual piece, I'm glad you spotted the reoccuring left hand Sirius, as I was wondering if it was too repetitive. I havent been too sure as to what I could actually do with it, so i'll be giving your ideas a go asap! Also, hewhoisiam, I'll learn to transpose it up a tone or two tonight. I wrote a little piece for my ex-girfriend for her birthday, and transposing at the end worked well.