your plants look good.. and healthy...
for being 35 days in they are about where they should be in relation to the size of the plants.. using a bloom nute and a blossom booster will help to thicken them buds up nicely.. or if you are tight on cash UNsulfured molasses, and i stress the unsulfured part, is GREAT to add to your plants for flowering.. it will swell your buds and make them dense..
they still have a good amount of time to go.. which means a lot of growth potential left.. you still have the "6th week swell" coming up.. but i would venture to guess your buds with be about double what they are now in the end.. (if you feed her some nutes
)
remember small plants will yield smaller buds... but like i said you are about right on for where you should be... keep it up brotha!!