big buds on small plants?

First time indoor grower. Plants are about 3 ft tall. Buds are close to the main stem and seem kind of small. Is there a way for a smaller plant to produce larger buds. I'll get some pics posted for examples.

a top tip for getting the most out of your plant is to support its branches some way (there are many)...it buds will then be as heavy are she can produce them