Snake cobra

Let’s start a master class on assembly modular a snake.
For a start collect the yellow, brown and green modules origami cobra.

The scheme of assembly of the module for origami.

Begin the assembly with a snake tail. The modules should be fixed deploying them the short side up as shown in the picture.

first row: 1 brown module;
2nd row: 2 yellow module;
3rd row: 3 brown modules (last modules are put on by one pocket one corner);
4th row: 2 green module (extreme corners of the previous row of modules are free);
5th row: 1 green module, 1 yellow, 1 green (extreme modules take corners of modules of the previous odd row);
6th row: 2 yellow module;
7th row: 1 yellow module, 1 brown, 1 yellow (extreme modules take corners of modules of the previous odd row);
8th row: 2 brown module;
9th row: 1 brown module, 1 green, 1 brown;
10th row: 2 green module;
11th row: 1 green module 2 yellow (in this case yellow modules are put one pocket on one corner), 1 green;

12th row: 1 module yellow, 1 brown, 1 yellow;
13th row: 1 yellow module, 2 brown, 1 yellow;
14th row: 1 brown module, 1 green, 1 brown;
15th row: 1 module yellow, 2 green, 1 yellow;
16th row: 1 green module, 1 yellow, 1 green;
17th row: 1 green module, 2 yellow, 1 green;
18th row: 1 module yellow, 1 brown, 1 yellow;
19th row: 1 yellow module, 2 brown, 1 yellow;
20th row: again the tail extends (see a photo 2), it is necessary to put on 1 brown module, 2 green (one pocket one corner), 1 brown (extreme corners of modules of the previous row remain free);

21st row: 1 brown module, 1 green, 1 yellow, 1 green, 1 brown;
22nd row: 1 green module, 2 yellow, 1 green;
23rd row: 1 green module, 1 yellow, 1 brown, 1 yellow, 1 green;
24th row: 1 yellow module, 2 brown, 1 yellow;
25th row: 1 yellow module, 1 brown, 1 green, 1 brown, 1 yellow;
26th row: 1 brown module, 2 green, 1 brown.
Then repeat ranks from the 21st on the 26th 5 more times.
After that collect the following ranks:
57th row: 1 brown module, 1 green, 1 yellow, 1 green, 1 brown;
58th row: 1 green module, 2 yellow, 1 green;
59th row: 1 green module, 1 yellow, 1 brown, 1 yellow, 1 green;
60th row: 1 yellow module, 2 brown, 1 yellow;
61st row: 1 yellow module, 3 brown, 1 yellow;
62nd row: 4 brown modules;
63rd row: 5 brown modules.
Repeat the 62nd row and the 63rd 3 more times.

Carefully hold workpiece and give the tail curved shape.

The hood of a cobra gathers separately.

1 – st row: 4 brown module;
2nd row: 5 brown modules (last modules in it, and the next series to put on one pocket one corner, extending the hood);
3rd row: 1 module brown, 1 yellow, 2 brown, 1 yellow, 1 brown;
4th row: 1 module brown, 2 yellow, 1 brown, 2 yellow, 1 brown;
5th row: 1 module brown, 2 yellow, 2 brown, 2 yellow, 1 brown;
6th row: 1 brown module, 3 yellow, 1 brown, 3 yellow, 1 brown;
7th row: 1 brown module, 3 yellow, brown 2, 3 yellow, 1 brown;
8th row: 1 brown module, 4 yellow, 1 brown, 4 yellow, 1 brown;
9th row: 1 module brown, 2 yellow, 1 green, 1 yellow, 2 brown, 1 yellow, 1 green, 2 yellow, 1 brown;
10th row: 1 module brown, 2 yellow, 1 green, 2 yellow, 1 brown, 2 yellow, 1 green, 2 yellow, 1 brown;
11th row: 1 module brown, 2 yellow, 1 green, 2 yellow, 2 brown, 2 yellow, 1 green, 2 yellow, 1 brown;
12th row: 1 module brown, 2 yellow, 1 green, 3 yellow, 1 brown, 3 yellow, 1 green, 2 yellow, 1 brown.

Then the hood narrows  therefore, continue to collect it, it is necessary to diminish the number of modules in each successive row, and extreme put on brown modules on the corner of two brown and one yellow corner of the previous row of modules.

In this case desirable to fix the extreme modules,coating each of them with glue.
13th row: 1 brown module (pull on the two brown and one yellow corner), 1 yellow, 1 green, 3 yellow, 2 brown, 3 yellow, 1 green, 1 yellow, 1 brown (put on the remaining three corners);
14th row: 1 module brown, 1 yellow, 1 green, 3 yellow, 1 brown, 3 yellow, 1 green, 1 yellow, 1 brown;
15th row: 1 module brown, 1 yellow, 1 green, 2 yellow, 2 brown, 2 yellow, 1 green, 1 yellow, 1 brown;
16th row: 1 module brown, 1 yellow, 1 green, 2 yellow, 1 brown, 2 yellow, 1 green, 1 yellow, 1 brown;
17th row: 1 module brown, 1 yellow, 1 green, 1 yellow, 2 brown, 1 yellow, 1 green, 1 yellow, 1 brown;
18th row: 1 brown module, 3 yellow, 1 brown, 3 yellow, 1 brown;
19th row: 1 module brown, 2 yellow, 2 brown, 2 yellow, 1 brown;
20th row: 1 module brown, 2 yellow, 1 brown, 2 yellow, 1 brown;
21st row: 1 brown module, 1 yellow, 2 brown, 1 yellow, 1 brown;
22th row: 5 brown modules;
23rd row: 4 brown modules (in this case on each side it is necessary to leave on one free corner of modules of the previous row).
The hood is ready. Slightly bend it, having given the necessary form.
Continue to the head assembly, again increasing the number of modules in each row.

24th row: 5 brown modules (extreme modules is necessary to capture the loose corners of the previous row of modules);
25th row: 6 brown modules;
26th row: 7 modules brown;
27th row: 8 brown modules.
Beginning with next row, the number of modules in each row is reduce again. In this case the extreme corners of the modules are free.
28th row: 7 modules brown;
29th row: 6 brown modules;
30th row: 5 brown modules;
31st row: brown 4 modules;
32nd row: 3 brown modules;
33rd row: 2 brown modules;
34th row: 1 brown module.
Then given the workpiece shape. Glue the eyes.
Attach to a tail part of a snake a hood with the head.More convenient it will be done on a hard surface, putting both on workpiece sideways. For a more reliable connection, use glue.
Give the turned out stability of the figure,bending for this purpose a tail of a snake.

Note: for stronger connection of details it is possible to use PVA glue.