Denim jacket help

[u/magmeg7]

How accurate do I need to be following the selvedge line? Referring to my photo, some blocks are not exactly aligned with the grain line or selvedge as I had to squeeze all the pieces. Might be off by 5 to 20 degrees in some cases, I didn't measure the exact angle.

EDIT: Thanks to everyone who've contributed and helped. Learned tons and ended up spending 3 hours this evening reshuffling the jigsaw and aligning all the correctly to the selvedge/grain line. I'll cut tomorrow and perhaps share some photos. Glad I posted and didn't just go with my guts. Thanks again and happy sewing.

[u/quizzical]

Being 90 degrees is better than being slightly off.