There are a multitude of different types of crafts you can make, but there are several things in common between almost all kinds of projects. Therefore, it is possible to give some answers to the question of how to make crafts.
Making crafts begins with planning. First, the would-be creator will need to decide what to make. Then, plans for the item need to be obtained. If it's a more free-form craft, then general instructions for the specific type of item need to be sought. These can often be found in search engines, or in stores which sell materials related to that type of craftmaking.
In order to actually make the craft, the necessary materials need to be gathered. For some types of crafts, those materials may already be in the house. For other kinds, you will need to buy the items you'll be using. Many times, crafts will use a combination of newly-bought items and things you already have. Once you have obtained the needed materials, bring them to your workspace so you'll have easy access to all the items.
When you have everything handy, you can begin making your crafts. If the craft will have steps or components which have the possibility of making a mess, use newspapers or other materials to cover your work area. Glue and paint are among some of the most likely substances to make a mess. If your craft needs small items like beads or seeds, make sure to use a stable container to hold them in as you work with them.
After this point, making the desired crafts is a matter of following the specific instructions for them.
The type of craft you will make depends not only on your taste and your own skill level, but on the age of the people who are going to be making it or helping to make it. It can be fun to teach children how to make crafts, but there are things to keep in mind if you decide to involve your kids. Kids are more likely to make messes with materials that adults are able to use neatly. This is not only due to immaturity, but because small children often don't yet have enough dexterity to handle some materials skillfully. Projects which require meticulous painting, like model cars, should be reserved for older children. Finger-painting, on the other hand, is messy but very fun for younger kids because they can get successful results easily.
Young children should also not be involved in any crafts which involve hot glue guns, hot wax, or X-acto knives because of the possiblity of injury. If the project can be broken down into steps, perhaps the children can participate in those steps which don't use these items.