• non-rp  ( aka personal )  blogs are usually UNWELCOMED —— respect a RP blog’s rules and do not follow if the RP blog says personal blogs are unwelcomed.  but if they are welcomed, be sure to not reblog a RP blog’s posts — because they do NOT operate like a normal blog and need to keep their activity clear!  the blogs’ guidelines will be your safest bet to know these things.
• exceeded expectation of your muse is foolish.  don’t go making a muse thinking everyone will flock to them  ( canon or OC in this case ).  don’t expect your followers to reblog your promo and spread word by demand  ( such as leaving IMs or even posts letting them know they can reblog this or that for their sake, etc. ).  this makes a user seem pushy, and rather unpleasant.  no one wants to deal with a bossy mun.  with that said, if someone declines a RP / plot / ship —— NO MEANS NO.
• NO GOD-MODDING.  NO INFO-MODDING.  most RP blogs are NOT okay with that —— so when going in blind, remember that.  it’s one of the biggest turn-offs, in which will make a blog less inclined to RP with you.
• do not vague another blog, especially if the words are hurtful, and are meant to cause a fight.  a lot of your mutuals may assume the post is about them, which can cause unneeded strain that could have been avoided.  if you have a problem with someone, just send them a message as politely as possible.
• if anon is available — USE IT  but do NOT ABUSE IT.  anon, for RP blogs, are there for muns who are too shy to send messages directly, for certain RP memes the mun may reblog / post, etc.  it is not meant for hate, unwanted criticism, etc.  always keep the mun’s feeling in mind when you send in an anon.  a lot of RP blogs LOVE getting random asks, and nothing is more disheartening when we get one full of hatred.
• a big portion of the RP community suffers from depression, anxiety, etc. so their RP blogs are usually a form of an escape, in this case.  with that said — THEIR BLOG AND HOW THEY RUN IT IS SOLELY THEIR BLOG.  if you have a problem with headcanons they have for a canon muse, or you simply dislike their OC or a ship they have, LEAVE THEM ALONE.  harassing a mun over their choice of muse and how they choose to RP them is a big asshole move.  just unfollow ; BLOCK if you must!
• MUTUALS ONLY MEANS MUTUALS ONLY!  not — “convince me to be mutuals with you!!”.  if a mun does NOT follow you back, then that means you are NOT mutuals.  it’s that simple.  do not attempt to RP with non-mutuals who has this rule.  it’s the biggest pet-peeve in the RPC, in which can have muns feeling anxious, annoyed, or even MORE selective.  they’ll just grow to resent you rather than to consider you.  it’s disrespectful!
• don’t follow / unfollow / follow again / etc. to catch a mun’s attention.
• if you approach a mun to plot, have more to say then  “rp?”  and such, and actually have an idea.  also make sure the mun you’re messaging is OKAY with being messaged.  reading the guidelines is your best bet to know.
• TAG YOUR OOC POSTS.  TAG TRIGGERS.  that’s all there is to it.
• make sure your links  ( rules / about / etc. )  are easily accessible & to read / find on your blog.  stating your AGE is very helpful, too.
• icons are normally a must for a lot of RP blogs, but they don’t need to be fancy or creative.  the best sort of icon dimensions imo are between 50x50 to 100x100.  anything smaller is TOO small, and anything bigger is TOO big.  however, this can vary by people’s opinions — but this is what i usually see!
• with the topic of respecting ships, you also need to respect blogs that have  MAINS / EXCLUSIVES.  do not go after another mun’s ship / rp partners if they are exclusives, and besides — that’s just COMMON COURTESY!

remember this is general information and may not apply to everyone  and  feel free to add your own personal  “big nos”  for your blog in the tags!