Hello there, advice needed please, I'm new to all this and having a go at creating some nfts using very basic tools but I'm hoping sax audio will bring them to life. Ive offered to add sax to other peoples work but had no concrete response so Ive ploughed on. Is there an optimal reccomnended resize for an NFT' upload/ mint or is that down to the creators discretion? Then im assuming you make them all the same to create uniformity within a collection?