Agree with @Armor_Buff that you are on the right track. With practice and fine tuning will you will improve quickly. You correctly observed that the spot and dot was a bit heavy on the bottom but there are still places where it shows to good effect. One thing you might try is to thin your paint a bit more than usual. Thinner coats will allow you to build the layers more slowly giving you more control over the degree of coverage. That said I think you are off to a good start. 
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