Did a lot of nice things that I was surprised to see (like the grab out of illusion trick vs fox at BF). Overall good, but perhaps it's just a matter of using the right moves at the right times. If you're planking, use uair not nair. Against spacies specifically, if you're trying to edgeguard a long-range up-b recovery, use utilt not dtilt. Greater range for optimal spacing and better knockback trajectory. Or grab if you think they will overshoot the ledge.
Which leads me to another thing. Grabbing is a central part of CF's game, IMHO, it helps you keep control of the match and grabs lead into more tech chasing and potential combos. It's not that you don't grab enough, it's just that there are times where you miss opportunities to continue to keep control through re-grabbing. Try regrabbing after side-b, or after low percent stomps. Try grabbing again after an uthrow around mid60's-late 70's percentages on spacies, and continue with more uthrows, chasing the DI and regrabbing. If they leave your range, it's either to tech/roll to another spot (presenting tech-chasing opportunities) or they DI off stage (presenting edgeguarding opportunities). Basically just try throwing in more grabs->uthrows->regrabs after low-mid percent pop-up's where a knee or fsmash won't hit.
Finally, if you want to speed up your game, be more impulsive when tech chasing. Don't fox trot, stop in place, and wait for the roll. Fox trot one direction, and dash immediately to whichever direction you believe they'll roll and then grab as soon as you get there. There's a greater chance of you re-grabbing them and avoiding the side-step that comes after you delay your tech chase. However, opponents will catch onto this and start spot dodging as soon as they get up from a roll, which you should try to predict and delay your grab or do a laggy attack to punish said spot-dodge.
All I can think off the top of my head, I play vs fox/falco often and to me it seems that you have a handle on spacie-****** tactics. Remember those special killing percent ranges for (but not limited to) :
uthrow->fsmash
uthrow->usmash->knee
uthrow->knee
uthrow->nair->knee
they're too good.