Hello
I really should know this but I don't 
When sewing together a soft toy, I did a seam allowance and hand sewed it right sides together and turned right way round at end to stuff.
Some of the seams are great - you can't see any stitching but others are terrible you can see the stitching and they're all gapey and puckered.
What have I done wrong? Are my seam allowances not big enough? My stitches too lose/tight, too big/small?
Argh! Please help 