My first CAL ever.
Doing a diffrent colour way
For most squares used 3,5 mm. For joining and Border 5 mm.
Next one i would do with 4 and 5,5.

Made the blanket bigger (1 vertical/one horizontal).
Each square 5 times. For each colour 2 Squarepatterns.

last 3 squares decide what squares and colours you want more.

while joining start in the corner stiches (not in second), it is easier for doing border.

Border and joining in colour Heerenveen