This question comes from Seán Mc Ternan. And he asks “What are the little thing’s you consider important to give an overall ‘Professional’ look and feel to your graphics. Meaning what do you add in terms of blending options to make your colors look more alive rather than a flat?”
Well that’s a lot of things and the answer will likely disappoint you. It’s a lot about choosing good colours. Knowing about colours. And applying colour theory. As well you get an earful about what I REALLY think about your colour choices.
If you want to suggest a tutorial topic please do so here: https://docs.google.com/forms/d/13A2eHcNQADsjyPWrrlbFTeOMqPAbqAxq07p7Alroh_w/viewform
If you have any questions just let me know in the comments.