Hey there! We are glad you liked our content! @water31melon

Here are some tips to make your post into italic/bold :

• Use two Asterisks symbol before and after the text (without any space), you wish to bolden up.
  TEXT (asterisk1asterisk2TEXTasterisk3asterisk4)

• Use a single underscore symbol before and after the text (without any space), you wish to post in italics.
  TEXT ( underscore1TEXTunderscore2)

• Steemit has a total of 6 sizes, from 1 to 6, 1 being the largest and 6 the smallest. To convert your text into the largest heading possible, use 1 hashtag before the particular text
  (with space between the hashtag and text).

largest heading

( hashtag1 largest heading )

Similarly use 6 hashtags before the particular text to convert it into the smallest heading.

• If it says upload failed, try reducing the image size and then insert it by dragging and dropping.

Hope you find this helpful :)