Hi Heather,
Let's start with the backpack, there are still a few details to work on:
First, I have to say, the different seed tray colors are a fun detail; I'd actually never noticed that before. I like it.
The pack needs to be weathered much more; compared to the armor, it's far too clean. Also, take a look at the area around the Brexton Box.
You should shorten the top part of the Mortar Tube a bit; the gap between the lid and the detail is still too large. And, there needs to be a screw in the center of the radar dish.
I would spray the radio black; all the markings aren't visible in the pictures.
Regarding the Bapytblaster—a very nice piece, it's amazing what's possible with 3D printing—it is printed, right? However, you should remove the cable in the middle; the Bapyt didn't have that.
Regards Thomas