In order to colour something, you should first find something to colour. If you can’t find anything to colour, you must draw one. Since you are trying to select the correct pastels for your picture; draw the picture with a pencil on a piece of paper and when you are going to select the pastels, take the picture to the store.
Amount of colours
When you are trying to go for a pastel pack, you should see the amount of pastels inside the packet. Some have only 6 different colours in them, while the others have 12. There is a variety of colours these days so you should make sure that you need to have a lot of colours when you are going to buy them.
Now you should know what colours you require to be in the picture you have taken with yourself. Try to see all the colours and you should be able to select the right amount of colours that you require. Therefore, don’t confuse yourself and see whether you need those colours or not and don’t drop any basic colour. For example: Red, blue, yellow; these are the colours that you would not want to leave behind.
The more colours that you will have, it will add more details to the picture you have taken with yourself. Obviously, you know that the more colours you have, the more details you can add to the picture. There are different shades of yellow, green, blue, etc. So make sure that you select the correct pack and bring it home when you finally have to colour your picture.
Maroon and red
Do not try to mix colours such as maroon and red. You might want to drop maroon or red when you are at the shop, but you should know that they both have a different colour tone and you should not be confusing them.