I have literally just put on the pattern how I made my blanket, and the way I do things may not suit everyone or give the same results. I guess it depends on your crochet style, tension etc. but it is the way I have found works best for me. I would advise making a practice square or two to see if it works for you. It will work just as well and look the same made with traditional solid squares. Link of the pattern is below!
Boho Rainbow Squares Blanket
by Kaz Hall
Boho Rainbow Squares Blanket [ FREE CROCHET PATTERN ] downloadable pattern is available here.