1. Too Much Pressure on Your Pencil
When you are using your pencils be careful not to use too much pressure. If you push too hard you will destroy the texture of the paper. This will be very noticeable in your drawing. It also makes it more difficult to control your drawing if you want to modify the area where the texture has been destroyed.
To preserve the texture of the paper use light pressure. No more pressure than you would use with a stylus on the surface of a smart phone. If you use less pressure and take more time building up your values you will have more control over your drawing in general.
2. Not Using Rich Darks
It takes time with graphite to establish rich darks (not a challenge with charcoal). Learning to see and increase the value range in your drawing will help your drawings have more visual impact and more depth. Sometimes fear of going too dark can keep us from establishing rich values. However if you use a light touch and know how to use your erasers this will not be a problem.
3. Outlining Everything in Your Drawing
Nothing will kill the depth in a drawing quicker than outlining everything. If you use hard lines to outline everything, you will destroy the illusion depth. There are times when you use lines to create value for reasons of style such as cross hatching, but as a beginner we usually rely on outlines instead of value to separate and define objects. Look instead for “edges”. Edges are created by the value of a particular shape in context to another shape. Example of the outside of the bag where it touches the darker shadow shape of the wall creates the edge of the bag in the drawing.
4. Using the Wrong Paper
If you are having problems with your drawing it could be the paper. If you are using cheap printer paper you are going to have a harder time getting a decent drawing. How thick the paper is makes a difference. Thickness of paper is measured by pounds or lbs. Usually for drawing paper you want something that is 70 lbs or higher. Paper texture is also a factor for beginning students find paper that had a medium texture. If it is art drawing paper it will list on the drawing pad or roll or paper of what texture it has. Avoid smooth or plate surfaces because they have no texture the marks of your pencil show the slightest variation making smooth values difficult. Also with smooth papers you can’t get deep values. Medium texture or other medium textures like bristol will work the best
5. Using Scribbled Lines instead of Value and Shapes
Many times when we find something difficult to draw with lots of details it can overwhelm us. A good example is drawing Trees. The first time I tried to draw trees my brain turned off and I instead began using scribbling instead of good drawing decisions about shapes and values, it was easy to just scribble in a little something to represent the leaves. This is a mistake everyone makes when drawing detailed objects. Whenever you find yourself just scribbling in stuff look back at you object blur your vision and try to find a definite shape and a definite value. Then put that down on your paper. You will find your drawings will improve by leaps and bounds when you do this.