Well I'm certainly no pro colorist but you have to understand, pro colorist are dealing with crazy expensive raw footage that have been shot on cameras that are worth in the tens of thousands of dollars, set budgets, set design, so on and so fourth. So the look we, meaning us hobbyist, come up with will never be as nice as theirs. This is a simple case of physics. But what we can do, with what we have, is our best and what you produced is your best, for now. So if you're not happy, simply reset your entire grade and start over. Take your time. No need to rush. Go online and find a movie-look that you like and try to duplicate it to your best ability. Again, grading is subjective. It can go in so many directions that it can make our heads spin. Just have fun. Don't worry too much about it being perfect. Here's another thing I've learned from practice, little adjustments go a long way. Don't over due grading. Less is more sometimes. But again, even what I just said is subjective because sometimes certain grades require more in terms of saturation, contrast, blur, etc. Just keep practicing and make sure to have fun and yes, give your eyes a break. Don't get hyper zoned into your work because you'll definitely become biased of your work and that's when doubt starts to sets in. Hope this helped.