WatchOutForTheBang

I can't seem to find that brand in the UK

Thanks for the comments, is this the stuff you mean: https://www.amazon.co.uk/gp/product/B0088HRPVO/ref=ox_sc_mini_detail?ie=UTF8&psc=1&smid=A2XYTMGVC5M4FC

Hi All, I am trying to get my Scouts to make knife sheaths, I have already designed the patterns and made an example (see below) however, there was one issue I had when I was stamping the front flap. As I want them to put their name in it I used a background stamp to allow my name to stand out, however, as you can see the stamping has distorted the flap from being square and lining up exactly and made the sides bulge out more than expected, how can i prevent this distortion and bulging?