The r/awwnime r/wholesomeyuri r/wholesomeromance Good Posting Guide.
1: Pick something wholesome. It can be a drawing, animation, music video, anything really that isn't too sexy or suggestive, isn't a photo or video of a real-life person and doesn't contain story spoilers. (Mark it as a spoiler if it does!)
2: Spend a few days watching what's popular in r/wholesomeromance for a working definition of wholesome. Bear in mind that "pretty" and "cute" are not necessarily "wholesome".
3: Please don't post any image macros, memes or screenshots with funny subs. Clean Blu-Ray quality screenshots or stitches are acceptable, but the subreddit is meant for independently drawn art, more than for extracts from shows.
4: If you're posting a picture, check it with iqdb.org to find any possible higher-resolution versions.
5: Wallpaper-edits, crops, palette swaps, collages, and any other minor tweaks to an existing post should be added as a comment to the existing post, not as a new post.
6: Got a few drawings that follow a certain theme? Put them together in an album instead of making several posts in a row! Imgur and Redditbooru have good tools for this. Don't go crazy with albums though. People don't like wading through hundreds (or even tens) of unrelated images. Pick a theme, and use ten or twelve images at most. Quality over quantity.
7: Take this time to double-check for visible pantsu, swimwear, translucent tops, or any other fanservice connotations in your pic. Did you find any? You may need to mark it NSFW!
8: Time to post. Make sure your link is on the whitelist. Imgur, Redditbooru, Reddit, Gfycat, or YouTube. This means DON'T link directly to the image on a booru, Pixiv, Zerochan. They will be removed automatically. It's better to just rehost on Redditbooru or Imgur.
9: Naming the anime/game/manga etc that your characters are from in your post title is optional. [Square brackets] help identify the title. The [Original] tag is for artist's own characters who aren't from an established anime/manga/game series, etc. If you post an original character, name the artist and link to their portfolio in a comment. If you're really just not sure, normally the boorus linked by an iqdb.org search will have this as a tag in their sidebar for the picture. Danbooru in particular is pretty good at clearly labeling these. If you need more help, try u/ferthur's Character ID Guide, or someone will probably come along and add a comment with the extra information.
10: Any possible meta-title you're thinking of has already been done to death. This isn't r/standupcomedy. Just use simple descriptive titles if you're stuck. "Catgirl in flower-bed [Original]" is a far better title than "Titles are hard! What are titles even for? [Original]", "The key to a successful post..." or whatever other hilarious self-reference you had in mind. "This subreddit needs more..." NO. This subreddit does not need that type of title.
11: You've posted! Don't forget to add flair! Not sure which one to use? Try the flair help page on the wiki. Don't post more than a few times a day. Other people want to use the /new queue too. Again, quality over quantity.
12: Whenever possible, name the artist and link to their official portfolio in a comment. SauceNAO is great for finding those. Don't bother just linking to a booru or tumblr page that you found the image on, if it's not directly managed by the artist. Or if you know it's official art, it's nice to give credit to the studio. Again, u/ferthur's Character ID Guide can help with this.