-Marvelous Designer- Curve point problem [ SOLVED ]

Hi, I'm a beginner in MD. I've encountered one minor problem. Whenever I try to make a smooth curve in pattern making, my curves end up turning too jagged and not smooth as I want them to be. I looked it up somewhere that it could be my avatar is too small but I'm using the EA Female avatar by cakewaffles. Any idea as to why it might be so?

As you can see my curves are very harsh near the armhole and neckline :(

please help and thank you !