We all make mistakes. Imagine what the world would look like if we didn't. I often explain my painting method as one big process of fixing mistakes. So, there's nothing wrong with mistakes. It's all part of the process of painting. But some mistakes are worth knowing about beforehand. Perhaps we can try and avoid them next time. Perhaps.
Using too much Paint
Many beginners want to dive into the yumminess of oil painting and create fast, big and bold expressive brush marks. They don't realise how difficult it is to create well thought-out, intentional and expressive brush marks. They end up putting way too much paint on their canvas, making the whole thing look messy.
Paint thinly, use very little paint, so you have the time and space to build things up and get things right. Slow down.
Mud often comes from either too much paint and/or a lack of colour mixing skills. If it doesn't look right on the canvas, then it is so tempting to just add some more paint to try and fix it. Still not right? Add some more paint. Before we know it, we have the all too familiar mud.
Reduce the amount of paint you apply to the canvas! Wipe it off if you make a mistake instead of adding more paint. Load your brush with much less paint. Practice colour mixing skills by working with a limited palette (for example).
Skipping the Foundation Steps
Oh it is so tempting to paint that eye, to put in that mouth. How many times have I not had to repaint a perfect eye just because it needed moving up or down. It is so frustrating! I still, after all these years, have to tell myself to stop going into detail until I am totally sure about its placement.
Spend that little bit of extra time at your underpainting. Work out the composition, the placement, form and shape, the values and everything else in the underpainting. It sooo helps later on.
Painting a portrait is hard - it is so obvious when you get it wrong. And it is so fantastic when you get it right. But many beginners end up drawing a face and forget to really look, like they would when painting a still life or a tree. A generic face comes out, only related to the sitter by it being a human too. We all know there is a mouth, nose and two eyes and it is so tempting to just put those in, in the obvious places.
Instead of painting a portrait, consider a portrait as a 'head' and focus on the big shapes that this head contains. Shadow shapes, dark hair shapes, the shape of a cheek, a nose, a chin. The eyes, nostrils and mouth will follow suit, they will fit nicely within those shapes later on.
Drawing versus Painting
If you are used to drawing it can be hard to start thinking in terms of planes.
Use a wide brush to force yourself to forget about lines for a while and just look at value, surface, shape and planes. You'll be amazed!
"I Am No Good"
So many painters feel like they are no good, their work is not worthy of showing to anyone and they feel embarrassed. Many even feel like throwing in the towel when they see amazing art, thinking they will never be that good.
But hey, do you want to throw in the towel when you visit a museum full of old masters? Do you remember why you started painting? Surely it was not to become the next Michelangelo? If it was, then you probably put in the hours and are pretty good by now. But if you did not set out to become the next Great Master, and you never did want to commit to 100 hours of painting a week, then why not just enjoy it? Why set the bar so high?
Artists that have taken the art to the highest of levels are celebrating and showing the world how amazing art can be. You enjoy the same thing. Just because Bolt can run amazingly fast, does not mean you can't enjoy a jog. Just because Jamie Oliver can cook better than I can, does not mean I can't enjoy my home-cooked dinner. It's the same in art: just because that amazing artist creates amazing art, does not mean you can't celebrate and enjoy the same thing: create art.