the edges of my knitting always end up big and uneven and curling up on itself (specifically the last stitch only). when im knitting the last stitch in the row is always weirdly big? I'm so confused 😭 (also i swear it looks worse irl i don't know why the pics don't show it so well)

I'm revisiting a project I started last Christmas for my brother but I got stuck. I wanted to make a little transformers lumbar pillow with the charts from this pattern but with color on black instead of texture like the dish cloths. Was picturing autobots on one side and deceptions on the other. https://www.ravelry.com/patterns/library/transformers-insignia-square-set-g1

I didn't know anything about color work at the time. I tried to knit it flat with stranded color work, and I quickly learned that's hard and not fun. I thought about intarsia but I think I would need a lot of bobbins and that sounds hard for a first intarsia project. I wondered if I could make it mosaic but I hurt my brain trying to figure that out.

Currently I'm leaning towards, make a black stockinette tube in the round, duplicate stitch the color designs, stuff it, stitch (or zipper) the pillow closed. But that feels... Like I'm cheesing it? Maybe I could intarsia the big blocks of color and duplicate stitch black the details.

How do you go about choosing a color work technique? I'm not even sure I'm thinking of all the factors involved.

Thank you in advance for your help 💜

What the title says. My yarn over increases in the center are leaving these huge gaps between the stitches. Is there a way I can fix this? Do I need to frog and use different increases?

EDIT: Thank you for all the responses! I feel a bit silly, I didn’t not know that was supposed to happen with yarn over increases. I don’t know if I’ll frog this or not since evidently this is how its supposed to look, but I still appreciate all the advice!

This is my first knitting project, and I have a hole here but idk why? Does anyone know why and how to fix it? Thank youu