As a creative person I don’t like math, but it exists even in drawing. Luckily, it has nothing to do with the problems, equations or worse – square roots and integrals. All you have to know is the basic geometry – that means you should be familiar with different types of lines and shapes. That skill is crucial for drawing and than painting various objects. For instance, to draw a glass, you’ll need to make two ovals and two lines creating an upside trapezoid.
P.S I’m not perfect in drawing, so don’t be too strict to me 🙂 Also, maybe this fact will be encouraging for you (you just don’t have to be perfect, especially in the beginning! 😉 )
Draw a lower arch like a smile and mark (or just note) it’s center.
Then proceed with the upper arch that to build an oval.
Draw a vertical line with goes little sideways. You can make a very light center line in up from the center of the oval for reference.
Mark two points for the upper oval.
And proceed with the same steps as in the beginning.
Next are the lines for water level.
Ligthly fill this middle oval with the green or blue color.
Fill the bottom of the glass with the blue.
Cover the glass (from the lower arch on the bottom up to the lower top arch) with the light blue first. Then the lower glass’s part with the dark blue. Also, fill the 1/2 of the upper oval (from the upper arch to the oval’s middle). Make sure that the strokes are very light. To reach the darker tone (on one side of the glass) don’t press hard on the pencil, but cover again for approx.1/3 of the glass and then again on 1/4 and again on 1/5.
Highlight the glass’s contours with the dark blue except the lightest side.
Note the direction of strokes – they should be both vertical and horizontal, and it is important, that the horizontal ones aren’t strait but follow the glass shape or basically repeat the lower arches. This way the glass gains its dimension. If you’d fill the glass with the straight lanes only, you’ll get a flat object.
Now it’s a turn of a white pencil. Make some highlights on the top edge, right side and middle of the glass.
Now it is a time for a shadow. Notice that without shadow any object would be like hanging in the air with no support. But that’s not real unless you’re drawing something flying, like a balloon or fly. Otherwise, the objects always “connected” to some surface like a table, floor or something else. Thus, you have to depict a casting shadow. Choose for it a contrast to the glass color – here is dark brown. Make strokes on the darkest side defining the glass’s bottom. They should start from approx. 1/2 of the lower arch’s center. Right under the bottom the shadow is darker, so put additional layer (or two if you want) on the existing stroke.
Now get the dark blue pencil and with the light strokes make an overlap shadow in a shape of the glass. This shadow goes further than the first one.
The glass itself is done, but to me it looks too lonely, so I decided to put a simple flower in it 🙂
Did you ever note, that a stem in a glass with water won’t represent a solid line? Here is a bit of physics (the level of a science my humanitarian mind can endure :)))) The glass and water would broke the line into several pieces slightly disconnected from each other.