This is a finely patterned vest, like a floral wall in spring.
The yarn needed is finer.
Needle size should not be larger than 3.5mm.
The yarn should not contain mohair to make the pattern more prominent.
For the initial cast-on, use a ribbing cast-on method for a nicer edge.
For the curved shape, explain using photos; if a video is needed, it can be emailed to me.
The method for the neck and cuffs is different from before, so extra sewing is needed for the curved shape instead of picking up stitches.
Enjoy your knitting time!