How to be more expressive when you do oil painting as a beginner?

Loosening up might help you become more expressive, but painting faster won't necessarily accomplish anything. My first art instructor wiped her hands clean on my nice white canvas--it shocked me at the time, but demonstrated the canvas was not sacred. Using a more "gestural" style might help, i.e., move your arm more to apply paint. An instructor once advised me to paint a painting using a ladder. I was instructed to climb the ladder, jump off it, and paint on my way down. I didn't do it, but it was meant to inspire me to use the movement and rhythm of my body as part of the creative process.

Good luck with the class if it is still going on!

I don't know about your instructor's advice to work faster...however since you can use three colors, I would suggest using two Primary colors, such as Red and Yellow, and the complement for Red which is Green. This will give you some color intensity and interest.

Being "expressive" can be difficult if you are just learning to paint. As a beginner, or if you are in an introductory state, the art class probably consists of brush stroke techniques, composition, lighting, color, etc.

When beginning, many painters are afraid to make mistakes, or to "mess up" their paintings.

Being expressive comes with a little risk. Like Bob Ross always said, "Let's get crazy now. Let's add a little rock right there." He always had a general idea about what he was going to paint, but he also just "let it happen".

Oil is a very nice medium to use for expression since it blends well and doesn't dry too quickly. It is my favorite painting medium between the ones I have used in the past (acrylic and water color).

To become a little more expressive, try little subtle things such as stroking the brush more quickly, leaving edges unfinished, making one long line with a brush, and then leaving it, make short little strokes in other places. Change it up a little. Go a little crazy, as Bob Ross would put it. Don't worry about messing up your painting. We learn best from our "mistakes".

I am pretty certain a "mistake" will be tolerated in your class. Take a risk. Add more blobs of white. Use your blank canvas as part of the painting. Do whatever you FEEL like. If you feel frustrated that day, make the picture more violent by scraping away some of the paint. Whatever idea pops into your head, JUST DO IT. Maybe you want the shadow on the pear on the OTHER side of the fruit, on the wrong side of the light source. Just try it! You might like it.

You could also try a helpful expression exercise: pick an object, pick a definitive kind of music (quick, angry, romantic, silly), and paint or draw the object in the way the music makes you feel. The biggest key with this exercise is not to think about it too much. Just let your hand do all the work. Don't be afraid to put a big blob of blue all over that apple!

Another great way to start those expressive juices pumping is to look at other people's paintings and see what they are up to.

Hope this helps. Best regards for your class and paintings!

being an artist i must say expressive yourself is the most important key for any artist,because first of all whatever u r going to paint is already in your mind so give your painting a story that how and why u r painting.Keep in mind painting speak itself as u already have something in your imagination while u were creating your best piece of work.