Since Steve's pattern is large and divided in 4 it is hard to modify that directly plus I don't have the font.
The easiest way to change this is to print out Steve's pattern and then overlay the cow with the tractor below. This came from Steve's pattern "You think my tractor is sexy". I tried to make the size the same but you may have to resize once you print Steve's pattern.
Please let me know if this is not what you are looking for
Please show if you cut.