If using only regular plastisol
1 Base white (230 mesh) at 50lpi halftone, 22.5 degree screen angle using ellipse dot shape.
2 PINK. 305 mesh. 50lpi halftone, 22.5 degree screen angle using ellipse dot shape.
To do it in 2 colors, you need to use that 305 mesh (for best results) of maintaining the detail. You need that pink to be darkened up by the shirt color (for the shadow tones).
You can use all 230's but then I'd also want to use a process black (cut back on the solid content) on top for the fine detail.