camo

Hello everyone, Both of these aircraft have squiggles or wave-like lines. On closer look, some of these lines resemble pretzels (at least I think so!). On the Me 262's port wing, which actually appears on the right-hand side of the photo and is facing downward, you can see a few examples of...

Has anyone used these such masks before ? Is it just masking tape cut out to the shapes of the camo' ? Some pictures of the mask set would be nice! AML 1/48 Avro Lancaster B.I/III Camouflage Paint Mask # M4923 | eBay