Hey so how much extra yarn do y'all buy when buying yarn for a pattern. Is it just an extra ball or a certain length or are you insane and buy less/exactly the amount it calls for?

I'm making a blanket that calls for alternating color squares of 5mm and 9mm yarn. It's a checkerboard pattern worked as one piece, not separate squares sewn together. The pattern has no notes for how to ensure the same thickness across squares. How do I, essentially, "make" 5mm into 9mm?

hey tumblr knitting community i need some help. i’ve been knitting this sweater for months and finally finished the body but when i picked up the stitches at the underarm i got a hole there. does anyone know how to prevent it and/or fix it??? i’m only a few rows in so i should be able to go back to my starting point pretty easily but i’d kinda rather not.

Hey I’m knitting a hat with textured stripes(a few rounds knitted a few purled) on my cable needles and I noticed it’s uneven in places. Did I do something wrong? Can I fix it? If someone can help please do! I can provide pictures as well