I believe you are asking about cloning or taking cuttings.

yes, you can take clones or duplicates of your current plant and grow them into complete plants.

Tons of info all over this site on the process.

It is better to take clones in veg. than it is to take them in flower.

I guess to answer your question of "can you make your nugs bigger", I'd say you can make you clone bigger but if you were to take an actual flowering clone, or a "nug" clone, it would have to be reverted back to veg. growth before the plant would grow into a duplicate of it's mother......

Hope i helped.

Just search under "clone" and you'll see a lot of information.

peace:thumbsup: