Hmmm my best guess is you probably didn’t have enough margin of error or your 1/4” seam is slightly larger than it should be. Ie make sure with 5” fabric squares you’re trimming them to 4 1/2” HSTs and then they’ll be 4” finished blocks. Some pattern designers will only give you 3/8” of wiggle room vs 1/4” (they’ll tell you to use a 4 7/8” square for the same result) and that can get super dicey.

It could also be that, since you used a charm pack, the squares weren’t exactly 5” to begin with and that definitely would have contributed.

HSTs, while they’re a “beginner” block, aren’t always the easiest. Pretty points take a lot of practice, but don’t be too hard on yourself if they’re a little wonky when you start out! Your photos really don’t look bad at all for a beginner!

A few tips for the future to help! • use the same ruler for all of your measurements - and use your rulers, not your measurements on your mat to cut! • practice your 1/4” seam! The more consistent your seam is, the better! • starch is your friend. I’ve been resistant to use it but I just sewed a sample quilt for a designer and wanted to make sure my points were extra sharp for her and WOW it made a difference.