First time using a palette instead of painting straight out of the bottle

I hope you are able to see everything I’ve done. It is just rubbish lighting at the moment. And I can’t think of anything short term to fix the problem.

I have now applied two coats of Tamiya paint. But I’m very unsure about everything. I have painted for so long straight out of the bottle which didn’t give me any trouble. I’m afraid of doing something not good. Because I have absolutely no experience or enough knowledge to do this properly.

Here are the brush set I’m using for the painting: Modeling Paint Brush Set -

I have used Tamiya acrylic thinner to thin the paint down and added a few drops of paint retarder.

I would really like to get some feedback.