Shaping neck (raglan jumper)

Can someone please help, I dont understand what I am supposed to do! Reasonably new to knitting and struggling with when to decrease.

What size are you making, the first, second, third…?

2nd sorry!

OK, The pattern gives you the first dec row for the raglan edge. Call that row 1. Dec at the raglan edge on rows 3 and 5. Dec at the neck edge on row 2,3,4 and 5.