I have direct personal experience and have consulted our field manuals on camouflage, so I hope, I can provide appropriate answer.
Every T-54/55/72 series MBT of former CSLA (hope Checks stands for Czechs or better Czechoslovaks) was equipped with 12 x 12 m camo net plus at least 3 fiberglass support rods with (3)folding "fingers" made of the same fiberglass but of smaller diametre with cca 10 cm black plastic discs at their ends.
Camo net, when not in use, was kept in a huge canvas bag tied to (usually) rear of tank turret, supporting rods were kept in a sleeve made of canvas, too.
Camo net was "sewed" together/consisted of 3x6 m pieces/modules of three patterns, all three (position of green, brown and light green squares and triangles) defined by field manual as "Modules A, B and C"..., their position was changeable.
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Take this as an example of possible combination of modules A, B and C into 12x12 camo net... 1 square should be 1 m in reality.
HTH