I'm not quite certain where the right place for this thread is but I'll post it here since I don't know where else it would fit. If this is in the wrong area, I truly apologize and I'll try to move it to the proper location.
Anyways, I've wanted to suggest some new blocks for Minecraft and I notice that many people that do this sort of thing tend to add pictures of what any new blocks would look like. How do you actually do this? These blocks aren't in the game and were made to showcase what they would look like if they were added in. Is it a mod that I have to download or is there some website that these people use that I'm unaware of. Thanks in advance!