Ok cna someone break how to write this for a Marie Simultor...Please, Step by Step, so i better understand what to do...Thank You

Input a number
If number >10 then
number = number -5
Else
number = number + 3
Endif

This is what I did
Org 100
Input
Store X
Skipcond 010
Jump Else
Sudt 5
Jump endif
Else, Add 5
Endif, Halt
X, Dec 0

Please, tell me what I did wrong I am lost. Please, break it step by step for me!!!

Thank You in advance!!!

org 100
input
store number
subt y
skipcond 800
jump else
load number
subt z
store number
else load number
add k
store number
halt