I'm always happy when people ask for examples of the issues in their posts, as I feel it will help them improve.

We had an incredible start to the 1UP #esoteric community launch with loads of entries to our contests already.

That "already" is redundant.

Due to the HF20 shenanigans, the winners announcement has been delayed until today and week two will begin from today, 1st October 2018.

This would be best as two sentences. If you have to keep it to one, there should be a comma before "and."

Get your creative hat on

"Put your creative hat on."

The memes were both original and good quality and it would be great to see more entries in this contest, where there is a relatively high chance of winning a prize!

This should be cut to two sentences at the very least.

This is an opportunity for you to showcase your artistic talent and either share existing work or create a beautiful piece specifically for the contest.

Split it, add commas. Something. I ran out of breath reading this sentence.

These are just examples. This is a very long post, and I'm not gonna go through and point out every issue. None of these are terrible deal breakers, but in the aggregate, they have a cumulative effect on ease of reading.