I have this set of beautiful symbology my friend made in Illustrator for the community mapping project I am working on. However, every time I upload the picture marker symbols they are very pixalated in ArcMap. How do I fix this? I have tried uploading these in different sizes, in .jpeg, .png, .bmp, .emf formats. I can't seem to figure out how to upload a .tif file though. Do you have any input on how to make these symbols more high quality?