GGs. You handled Sakuya pretty well, but there's always room for improvement. You telegraphed your 66C a bit too much. Try to limit it to counter attacks where the opponent has a long delay (Remilia's 22B, for example) and when face to face with someone throwing bullets. Try to do more 214B/C setups, as well. the cover is definitely necessary. Lastly, if you're going to use Perfect Maid, use the shorter 22B version. People freeze up when they see it (as I did during that last match), deciding on a bullet punishment for it. 22B doesn't give them that time. If they're nearby, be sure to start mashing 5A like crazy to poke them out of their attack.
As for Remi, I'm not too good with her myself, but I'm trying to get there. I fell for you 236Cs more times than I wish to count, and you disguised them pretty well in between 5B/5Cs. Cut down on the 22B/Cs, though. You used it perfectly during a 214B setup, but only once. [5C] does eat up alot of bullets, but leaves you extremely vulnerable for any grazable dash attack (Reimu/Youmu's 66B, Sakuya/Yuyu's 66C). Try to watch out for those.
Keep netplaying. Hopefully, the slight lag wasn't too bad for you.