A "jumper" translates to "sweater" in the U.S. right? Just making sure. You mean a pullover sweater/jumper, rather than one with buttons down the front.
OK......since you're new at knitting, and BTW, KUDOS :cheering: to you for jumping right in....no pun intended :teehee:
So.....do you mind, or prefer seaming the pieces or would like to do it in 1 piece? Top down or bottom up? Bottom up and seamed is usually done for a first jumper simply because it's knit flat rather than in the round.
Don't let these questions bog you down, I'm just thinking out loud.
Are you on Ravelry yet, that's a perfect way to search for patterns. The pattern will say something like:
XS [S, M, L, XL]
Bust measurement: 30 [32, 34, 38, 40]
So you will know which one to make for yourself based on your bustsize. If you're a size 2, then probably the XS (in my example above).
I searched Ravelry for the highest rated, knitted flat sweaters, rated "easy" for beginners, go here to see the results. If you need help, PM me here or on Ravelry.