I like this question very much because it will enables new hubbers to enrich their hubs. Comparatively I am not an old guy but in this respect what I have learned is sharing here for the benefit of new hub-makers.
1.Love to write.
2.Choose subject in which you are well interested and well informed.
3.Spend time enough to make a good hub.It may be one hour,two hours,three hours ,one day ,two days or fifteen days .You have to use much time for class hub.
4.Add an apt introduction.
5.Make a compact hub with well knit sub topics.
6.Add Content Capsules to enrich your hub.
add text capsule
add photo capsule
add video capsule
add link capsule
add comment capsule
add poll capsule
add code capsule
add table capsule
add quiz capsule
add map capsule
7.Use simple language that reaches to everyone.
8.The learning center and forums can be your best guide when you are thinking of some solution for problem.
9. read and read your draft and make it perfect.
10Follow some good hubbers in hubpages to see their quality hubs.Observe minutely their hubs and extract the qualities for which their hubs have become top.
11.Choose one special niche for which you will be famous on hubpages and it will automatically select your hubs as standard or featured hub.
12.Do not waste your time idly,think of your hub and review it again and again.
See you later.