Hen, you are growing by leaps and bounds with every piece! Your continued experimentation with digital art tools is really paying off.
Some comments on your last several pieces:
The puppy is beautiful. I suspect this was done from a real life reference or photo reference, because the detail and body proportions are perfect. If you did it freehand, then I'm even more impressed with the piece. Great color and brushwork.
The general posing and perspective of the Metagross piece was off, which is something I've noticed on some of your other works too. It's not bad or anything, it's just a little off. Familiarity with perspective and proportion is easily trained through practice sketching. Also, invest some time in learning the technical aspects of perspective and maybe some anatomy study. It's amazing how much that can help your freehand quality, even when doing "cartoons" like pokemon.
The coloring on your Metagross was good. I noticed you seemed to "wander" with your light source on this piece. For example, the front claws of Meta's lead hand are casting very obvious shadows that indicate that your light source is lower left. This part of the drawing is very large and the shadows are long and dark, therefore you are making a big visual "commitment" to this light source. However, elsewhere your highlights indicate a light source from upper left, and even upper right in a few places. Non-artists will rarely notice this stuff directly. But, it contributes to an overall artisitic impression that something is not-quite-right.
Your color blending on Meta was very good. It's obvious that you spent some time on this drawing, and it paid off. Despite my specific critiques, I think this Meta is one of your best works yet. Good job.
Boo Mario is great. Your blocking on this is very good. Nice use of foreground and background components. Your light source on Mario wanders around a bit here too, so it's something to keep in mind on future works. Another good job with color. It's obvious with this piece, that you have started getting comfortable with digital painting. The overall quality of this is much higher than earlier works.
Chatot is another good brushwork piece. Like the previous two, it shows increasing mastery of digital painting techniques and tools.
The Tennant piece is where you really took a big leap into a new form of digital art. You started tackling vectors. I do almost everything in vectors, so I can appreciate the work that goes into these kinds of digital renderings.
If that piece took 120 layers, I'd say you are going a little overboard with the layers. But, over time, you will develop your own sense of what things to keep on a single layer and what layers should be merged when they are "done". Merging layers is also nice on your PC, if you have CPU or memory constraints. I'm a "layer freak" too, in that I make new layers for damn near everything. But, just by looking at that piece, I'd say I probably would render that with 10-20 layers max on the finished product.
Great job on making nice well-formed vectors all over. I know they take a lot of time, but the clean lines are SO worth it, IMO. You'll get faster the more you do it. If you haven't already learned them -- keyboard shortcuts are your friend when doing vectors. Learn the keystrokes blindfolded. You'll soon be making vectors very fast and clean.
I don't know what you did different on the Tennant piece, but your light source was flawless on it.
The Ivysaur is very well-done and looks like another vector study. Particularly good work on the leaves on its back. Very nice, very clean. The posing isn't too ambitious, but I doubt that was really your focus. I suspect your continued experimentation with vectors was the main goal.
I love that you are fearless in trying out new things. I hope you continue to update your art thread. I can't wait to see what you do next.