is this what I would need to cover up the stitches on the backside of a baby item? I am using poly thread with soft tearaway and it's not bad on the backside but if there is something I could cover it with, i bet it would be appreciated by consumers

And by them, I mean my friends and family since I'm still learning, lol. So would it be an iron on tricot or is there something better to use to achieve this?