looks like a new planting.. how long they been there ..

if so.. the only failure is your need for instant gratification ... you have to start thinking in terms of tree time.. which is years... not months ...

i might.. on the left.. if you dont want them any wider toward the walkway.. selectively cut back a few.. to start training that edge ..

but otherwise.. i would give them 2 more growing season ... to fill in.. and to grow taller ...

conifers are trees.. and grow like trees ... mostly.. on growth spurt per season ... they are not like annuals or perennials.. in that they grow all season long ...

not to mention.. if planted in that last year or two.. they may not be fully ESTABLISHED ... settled in.. they are doing their work underground.. growing the root mass.. to accomplish what you want above ...

removing an errant branch.. here or there.. for your future goal ... is OK ... but its just not time to start talking about shearing.. in my estimate ...

grass looks very drought stricken... i hope these have gotten some supplemental water during such .. a good deep trickle drink in fall.. would help them get thru winter ...

there is simply no hurry with trees .. they do what they want to do.. and nothing you can dream up.. including fert.. is going to make them do it any faster ... which only leads us to tamping down your expectations.. and telling you to let them do it.. however long it takes ...

all that said.. they will probably look much better after spring flush ....

ken