Going to comment on the bottom three tags sorta only, though I'll mention while some of your icons are nice, you should check the brightening of a few of your icons.
As for the master Connosseur ones, they're overly brightened. Look at the right one - you can barely see the champagne. I'm sure the original stock wasn't that bright, was it? If it was, best not to use renders which are overly brightened otherwise it just destroys the tag and/or icon completely. As you'll see when you look at it, your eyes are drawn to the brightest part (aka the focal) which is the champagne glass because it's so white. However what you want is for the main person to stand out rather than just throw them on as an extra. If you wanted to make the champagne more important, but still get the original render to stand out, you should place lighting behind the actual character (but not too much so it doesn't look overdone) and then brighten the champagne a little less, then from that you'll have both stand out, with the extra focus on the champagne. Try playing around with other text designs too, different fonts, and take the positioning as well as effects into mind - what would make your text fit in with the tag the most? As for the background, it seems like a random image found on Google images :x Fiddle around with different effects in your graphics program and see where you go from there, because generally anime renders go best with backgrounds that aren't really established (in that sense I mean like, those look almost like real life stocks, but not quite anime) - plus the background you've chosen doesn't compliment the main colours in either of the characters, nor the text. Create a background yourself from scratch and I'm really sure it'll match your characters a lot more. :)
But good start on the Mew one, though, just make sure you watch your brightening, backgrounds and text.