I am having issues customizing a men’s premium longsleeve. Here’s the problem: It is possible to put text on a sleeve, but whenever I try to upload a file to put on the sleeve, It says it can’t place It in the area. It says I need to select a different design or a different printing area. I tried a lot of sizes but it just doesn’t work! How can I fix this? what is the size of the printing area on the sleeves? Can this problem even be solved or is it just not possible to put your own design on a sleeve?