Blender model doesn't appear

[PutraenusAlivius]

Blender troubleshoot:

- Have you assigned the texture to the object?

Spoiler below!

If you haven't, do the following steps:
1) Select the mesh in Object Mode
2) Go to the menu in the right side of your screen
3) Click the Checkered icon
4) Create a new texture
5) Change Type to Image or Movie
6) Find the texture
7) Save using Ctrl+S

- Have you triangulate the model?

Spoiler below!

If you haven't, do the following steps:
1) Select the mesh.
2) Change the mode to Edit Mode
3) Click Ctrl + T
4) Save using Ctrl + S
5) Go back to Object Mode

- What is your .dae export settings?

Spoiler below!

The right .dae export settings are:

• Apply Modifiers
  
• Selection Only (optional, if ticked select the whole model too)
  
• Include UV Textures
  
• Include Material Textures
  
• Use Object Instances