I need help. I am doing my first ever fmc solve but I have a few questions on how to do some things and if I’m doing things right. First, I’m using niss in this solve but I don’t know if I’m doing stuff right here is the solve. ( i have not finished it trying to find a good last com) this is also a standard CFOP solve so not to effective.

Scramble: R' U' F D B2 L' D2 F2 L R2 F2 R B2 D R2 D B' R' B' U L2 R' U' F

U R2 B’ F’ L F// Cross (6) normal scramble

F’ U F// F2L 1 (3) found with inverse scramble

R’ U2 R B’ U2 B// F2L 2 (6) normal scramble

B U’ B’ R’ U’ R// F2L 3 (6) normal scramble

U2 L’ U L U2 L’ U’ L// Rest of skeleton (8) Inverse

R’ U L’ U’ R U L U’// Comm that leads into a 3c case (8) inverse

And this is where I’m stuck. Also someone please tell me how to make my final solution work?

First ever FMC solve and you already know NISS? Alright!

So to get your final solution when using NISS, apply all of the moves you did in the normal scramble and then the inverse of all of the moves you found on the inverse scramble.

It's standard FMC notation to write moves done on the inverse scramble in parenthesis (). And also, I see you using ’ instead of ' for your prime moves. Subtle difference, but very important.

This is what your solve would look like-

U R2 B' F' L F // Cross (6/6)

(F' U F) // F2L 1 (3/9)

R' U2 R B' U2 B // F2L 2 (6/15)

B U' B' R' U' R // F2L 3 (6/21)

(U2 L' U L U2 L' U' L) // Rest of skeleton (8/29)

(R' U L' U' R U L U') // Comm that leads into a 3c case (8/37)

3c Skeleton: U R2 B' F' L F R' U2 R B' U2 B2 U' B' R' U' R U L' U' R' U L U' R L' U L U2 L' U' L U2 F' U' F

And now you haven't inserted your corner commutator yet, so I'll just let IF take care of that

U R2 B'

F' L F R' U2 R B' U2 B2 U' B' R' U' R U L' U' R' U L U' R L' U L U2 L' U' L U2 F' U' F

L F' R F L' F' R' F (8-2)

(As a challenge, try to find your very own 3 corner insertion that cancels 1 move!)

And then write out the final solution: U R2 B' L F' R F L' F' R' L F R' U2 R B' U2 B2 U' B' R' U' R U L' U' R' U L U' R L' U L U2 L' U' L U2 F' U' F (42)

If you just want to generally get better at FMC, I'd highly recommend

Sebastiano's FMC Tutorial. Good luck with FMC!