Foul Pilgrim

Hey guys, needing some hobbling advice. Just finished up painting my first 2000pts of Red Corsairs. I went to apply my transfers and found that my largest decals are just too small for the top hatches of my rhinos. Help! What are some options available to me to do these models justice? There's just no way I could free hand the tyrant's fist. Looking for all the advice I can get. Thanks!