Creating this light effect

How can I create this light effect? I have little experience with graphics how could I create this light effect?

I don’t think that is a light effect. It looks to me like it’s just drawn onto the texture to make it seem like there’s a glow effect happening. If you did want to do it properly, you’ll want to look at glowing materials. There are some shaders around the asset store that might help, though you may need Unity Pro, and you may need to spend some money.