Well, it's not easy! Just keep trying and failing about 1000 times and then maybe the masterpiece will unveil itself.

RELAX!! Take a deep breath. Relax! Walk away, sit down.

Don't try so hard

Relax - roll the shoulders - what are you using as the picture for the painting? Maybe it makes you tense - you can't just paint perfect pictures - what comes from them is a sense of the what you see - not the picture perfect of what you are looking? I hope that makes sense.

I know this sounds silly, but it's the advise I gave the elementary school kids I volenteered in Art Class with...."Stop trying and just do it without thinking, like you haven't a care in the world, jump in like a careless love unaffected by anything but the passion to create that lives inside your very fiber. Or. Like Nike say's. JUST DO IT. ;D

Don't try to over paint in an area, see the whole picture.

sTOP TRYING, ENJOY!!!

Heroin?

DONT LISTEN TO THE DRUGGY WHEN U PAINT OR DRAW OR DO WAT EVER U DO U DO IT CAUSE U LIKE IT SO IT SHOULD CUM FROM THE HEART WHEN U PAINT FORGET EVERYTHING AROUND U IT COMES NATURALLY TO THOSE U WANT IT BUT DONT SEEK IT

That might be it, you are trying too hard. Loosen up. Go at your painting, with the idea that you are going to have fun and be creative but it doesn't have to be perfect. If you aren't trying to force yourself to be perfect, you will allow your creativity to flow free and your work will happen naturally. The reason I say this, is because I used to have a problem with trying too hard and causing my paintings to look really stiff and too detailed and cluttered looking, to the point that they didn't look good at all. When I relaxed and didn't try so hard and just let the creativity flow the way it wants to, my work got better and I even allowed myself to do things that I never before would allow myself to do, like abstracts. I usually prefer doing realistic paintings and not abstract, since I don't really like abstract. I learned a lot from doing something out of my ordinary. For a while,I had to practice at not being so uptight. Some days I just got a canvas and played, splattering paint, smushing it on with varius objects, like a sponge or toilet paper, etc., what ever came to mind. It took several paintings before I could start to see the difference. My big break through came with an abstract self portrait, that is bigger then I am. I was taking an art class at the time and my teacher liked the painting so much, he kept it.

step away from the oils for a while - do some work in charcoal or oil pastels or even water colours - see how a completely different style of art affects what you are doing - then get back to the oils

Everything one does has it's plateaus, you think you are going backward and not improving. It's part of the painful process of mastering something. Scientifically speaking it takes 10,000 hours of doing something and learning the correct way to do it before you have master ed it. When it comes to art there is no formula really. It has to do with intangibles and that has no controls. There is no switch or knob to turn on or off. Your ability does not match what you see in your head yet. That is the problem. When you try to make it too perfect you end up messing it up. So paint to your ability and leave it. Make small increments of improvement not major leaps. Stop trying to make everything perfect. Choose one thing and work on that. For instance if you have many issues pick one and work on that one. Go back and forth working on different aspects. If you try to do everything at once you will have a mess and just frustrate yourself, as I am sure you already know. It's a long process and takes years to become an accomplished artist. That goes for any form of art, it took me many years to learn how to play guitar the way I wanted to. I am still learning, still improving and still frustrated with certain deficiencies in my playing. Do the best you can, finish a painting and move on to the next. Each one will get better and better the more you do it. Do a lot of small ones first and stay away from a large canvas until your skills reach a much higher level.

Don’t try too hard, leave it for a while. Painting comes from the hearth not from the brain. Sometimes you are not in a good mood and that will affect your painting. Show your painting to your friend and see what they think about it. Return to your painting when you are in the mood of painting. Don’t concentrate just on details but see the whole picture of it.

You could always try a different medium if that's a problem.I like acrylics for their ease of use.Oil paints can get muddied if over worked and take too long to dry.If you're having problems "seeing" things,loosen up with some gestural sketches.If color is the problem,take some time to experiment with the paint you have.It's all just practice,then it becomes second nature.I hope this helps you :)