i would just like to re-iterate what everyone else has already said. practice till you fart out the perfect version of whatever song you are doing.
and just save up more money. even if it takes 4-6 more months of playing gigs or saving back a percentage of your personal paychecks, or selling more merch, whatever, just save up more money.
I once went into a studio where they insisted on having a guitar tech come in and set the intonation of my guitars and the bass. I told them i was a luthier and had been to school and built the guitar i was playing but they insisted, it was just a way for them to get more money out of me, i passed on the whole studio, but not before i wasted ALOT of there time.
on the same note, i have made some really really good sounding recordings using a plain old tascam 8 track(tape!!!) but getting it to radio level and having a final master i left that up to a pro and only paid for about 3 hours of mastering time.