Seems you're using either emboss, engrave, gradient map or another word I forgot, lol I suck at defining. :x But the main effect you're using for all your tags isn't really helping them, since it appears to distort the actual colours so they seem well, odd. Try using just the render (the cut out image) and play around with the background, altering that, but not the actual render otherwise your main render looks somewhat awkward.
There's also colour choices going into this too, especially on your text. For example, on mystical wonders, it seems that you've probably burn tooled the text which somewhat distorts it and ruins readability, and besides that, bright magenta isn't really good for any of them because it isn't complimenting the background and definitely doesn't suit the font type. If you wanted to use that font, I'd suggest going with just black, no fill, or another colour which highlights the main part of the stock, which is the Pokemon, so maybe for Ninetales, the red of its eye, but as it is now the text looks really aliased, so perhaps you'd be better off trying anti-aliased text, which is an option in most graphical programs when you select text. Or if not, try another font, either could work to your advantage. Also, you should probably watch your placement of text. For example, on Ninetales one, if you moved it near its mouth it would create a much stronger focal point than where it actually is now. As for Bulbasaur, the right idea imo, but the text is too bright and draws attention from the Bulbasaur (there's also a border, watch for that, it works out on some graphics to have half a border but considering your style so far it just takes away from the quality of your tags). And as for Charmander, it completely draws away attention from the main focal, aka the tail, so really watch text positioning.
But really, play around with different effects otherwise your graphics will look bland - and try not to draw attention away from your focal, which primarily is the most important part. Good start for beginning, though. :)