Unlike the other RWBY team weapons which all include some sort of blade, Yang’s weapon is a pair of gauntlets known as Ember Celica. To cospay such a firecracker-like character, you will need to learn how to make this Dual Ranged Shot Gauntlets.
As always, the first step involves pattern drawing. Draw patterns on papers and trace
them on EVA sheets of 10 mm thickness.
For each gauntlet, we need 6 pieces of EVA patterns to assemble into a whole. In the picture above, pattern 1 is for the base, patern 2 is cartridge belt, pattern 3 is the cover, pattern 4 is muzzle cover sheet, pattern 5 and 6 are elbow pieces.
Pattern 2 should be 5cm longer and wider than pattern 1. 
Also pattern 5 should be 3.5cm wider than pattern 6.
Once finished the eva pattern cutting, roll up the pattern 1 and glue.
The 10mm EVA is kind of tough, rub or warm it first before gluing.
Then glue the pattern 2 onto it, the seam of these two piece should be close enough, so that they can
be fully shielded by pattern 3. (See photos below)
Next, glue the pattern4, 5 and 6 together as pictured, you can see the seams obviously. Donot worry, overlay the pattern 3 on and they will be covered.
Done with that,polish the edges and use heat gun to blow, the surface will become tight and smooth.
Next step is to brush with latex, which will make the EVA as hard as wood. For your reference, I brushed them four times.
When the latex get dried, it looks glossy. Time to polish again. Use polisher to take care of the rough surface and blow with a heat gun once more.
Pleasantly, we are almost done with the mainbody.
For bullets, cut the PVC tube into suitable length, and glue 3mm EVA sheet to the each end of the bullet. Then paint them red.
Similar way to make the muzzle. Color the PVC tube into silver and cut it in length. find the whereabout the muzzle should be and glue.
In case of falling off when wearing and posing, apply hot melt glue to fastern the elastic band at the inner side,
and then glue an EVA piece to reinforce.
It’s getting like powerful Ember Celica!
Donot forget to draw the margin with black. Be carefull, you are not doing it on a flat. 
Crazy adventures are awaiting ahead, are you going to find your own RWBY team members or fight alone?
If need, get quality Yang Xiao Long costume here. And for your convenience, you can find other RWBY cosplay costumes and wigs at miccostumes.com as well.
