Finally, I already have linseed oil! I can now paint more easily and be able to mix oil colors well on canvass surface and I no longer need to rely on handpainting my works because I can use brushes now.
Here's the linseed oil that I bought yesterday. It's water mixable and therefore, more lasting and easier to use.
Linseed oil allows colors to blend well and therefore produce lovely effects. I can move the brush freely along the surface and there's no need to apply lots of hard paint.