I used a 3mm hook for the smaller piece and a 6.5mm for the larger 1 however I recommend using a smaller hook. I also used 2 colors in a size 3 thread.
PS. Use stitch markers in ~R4: in the chain 1 spaces~ so attaching the 2 pieces together would be more accurate, (unlike my wonky hanging :D)
Create a magic circle. Chain 1.
R1: chain 6, *1DC, chain 3*, 6 times. Slip stitch in 3rd chain from hook. (7DC)
R2: slip stitch in chain3 space, *4DC,chain 1* 7 times. Skip stitch to join.
R3: *4DC together chain 3, 1DC, chain 3* 7 times, slip stitch to join.
R4: *2SC, chain 1, 2 SC in 4DCtog stitch. 3SC in chain 3 space. SC in DC, 3SC in Chain 3 space.* 7 times.
Slip stitch around if desired.
Fasten ends and block.