Yo good work man. I love anatomy so this part of the term was a lot of fun for me.
2 quick tips I noticed:
1) Abdominal group always has 10 "squares" in pairs. Make sure to count the 5 groups and try to memorize their position in relation to the bellybutton. Usually 3 groups over the belly button (not a rule but usually), with one group pretty much over the ribs, 2 pairs being very noticeable, and 4 below the bellybutton.
![](https://d1s0ws440m13mk.cloudfront.net/original/3X/9/e/9eada27cc8a8cd89c37a644cbb6a4926479d887d.png)
![](https://d1s0ws440m13mk.cloudfront.net/original/3X/9/f/9fdeb4a04457d15352be66bf3dd07ebd92596063.png)
2) There's a back muscle that's noticeable from the front (I forgot the name sorry, I'm a bit rushed right now), it's usually what forms that "V" shape at the side of the torso.
![](https://d1s0ws440m13mk.cloudfront.net/original/3X/5/c/5c56190ae621769b3a3bd8363e00391337091dbf.png)
Though it connects under the armpit it's not quite part of the front torso. The torso itself is usually fairly straight, and this muscle is what gives that V shape in buff guys.
![](https://d1s0ws440m13mk.cloudfront.net/original/3X/2/9/29c98e2862ad0259428fbd76eaf99e80b87a9408.png)
All around good work dude. Keep it up!