it's hard to make a funny political meme, especially in these days with so many thin skinned individuals. This one works because it is one that is genuinely funny. It pokes fun at the president, but not in a mean spirited way. You may have gotten some upvotes from a trump supporter or two. One thing you do need to focus on is your spelling. As chopsticks36 points out, the proper word would have been "THEN"These two words are very close in their appearance, but than vs. then have very different uses. Then is commonly used to express a sense of time or what comes next or used to be. Than is used to form comparisons between two things. Examples? Trump is richer than me. comparative. If you voted for Hillary, then you probably were disappointed.
Other words that will trip you up: you're and your and yore. when you write them ask yourself are you trying to say you are (you're) or are you trying to use a possessive pronoun (like is that your bicycle?) There, their, and they're are other grammar mistakes. There is a pronoun for a place. Their is a possessive pronoun showing something that belongs to more than one person, like that is their home.They're is a contraction expressing action, like You're, such as They are going to the store.
To, too, and two. To is a preposition which begins a prepositional phrase or an infinitive. Too is an adverb meaning "excessively" or "also." Two is a number. Many other words in English which reflect the number two are spelled with tw: twin, twice, between, tweezers, etc.
Proper use of spelling, or the right spelling of homonyms can make or break a meme. (break and brake are homonyms. As a verb, the word brake means to stop. As a noun, brake is a device for slowing or stopping motion. The word break means to smash or to shatter as in to break a cup. It also means to take a recess, as in a coffee break.
You'll learn more about grammar and spelling here than you could ever learn in school. If you have a meme and aren't sure if you're using the proper form of such words, make it, but don't submit it. reply on any of my old memes and I'll check it.