I like it looks very promsing like the other characters I've seen you made for EF-12. Just I can see aswell that many of the characters you made aren't rigged too well and their arms, legs, body and even their stance seem akward abit. I would suggest take your time with learning how to rig them first to fix those problems. Like there are many tutorials on youtube for blender that can help you learn how rig even animate abit oh, also you should add some lighting the models too because they seem very flat without it. Also I understand this is your first time with messing with 3d modeling too like don't stress it bro take your time and you'll get better at it like if I had money for a laptop or computer I would be learning myself how to make 3d models and characters for EF-12 too. So keep up the work bro and I look forward to see more awesome characters from you