Something is original if it has never been done before. An idea is original if it has never been thought of before, and a painting is original if it is the first time that picture has been painted. If something has been made as a copy or modified from something else, the thing it has been copied from is the original.
The dress in the picture is original, because it is hand-made and there is no other dress like it.
Something that is free of flaws and imperfections and cannot be made better in any way is perfect.
You feel proud when you have a good feeling about something that you have done, or something that someone else has done. A parent may be proud of their child who has just graduated university. A child may be proud of making a very good painting.
The boy in the picture is proud of his newborn baby brother.
Something is pure if it is made up of all the one kind of thing, with nothing different. Something pure has no contaminations or anything added.
The rose in the picture is pure white.
A fruit or vegetable is ripe if it is fully grown, and is sweet or otherwise ready to eat.
The red tomato on the left of the picture is ripe, the other two are still ripening. They are under ripe.
Someone is slender if they are thin and graceful. Young women are often slender.