If you'd like a bit of constructive criticism:[list]
[*]It's generally better to not place the focal in the centre of the piece, try following the Rule of Thirds
[*]You tend to use fonts which are rather garish and draw attention from the focal rather than complement it
[*]The text often disrupts the flow of the piece
[*]You need to work on your lighting, find a place where the light-source should be and work the piece to have the lighting reflect that
[*]The colours tend to clash, which in some pieces can be the desired effect but overall in these pieces I think it would be best to use colours that suit/complement each other
[/list]
Overall there is definite improvement, and 9 is, in my opinion, your best piece, as it has some sense of flow and the colours complement each other. Good job, keep practising and working at it.