How to match a slip stitch edge on the right and left side

Knitting the front panels of a cardigan. The instruction call for a slip stitch on either side of the opening. Is there a way to make the slip stitches match each other. The right panel looks clean and simple. The the left looks bulkier/looser. Please Help! Christmas is coming and I have to finish this soon!

If you’re going to pick up stitches for a front band, the edges won’t show and it’s better not to slip the sts anyway.