Train yourself to write neatly and coherently. Dream of the day when you have the opportunity to turn your field notebook over to someone else to type up your labels. You can look up lat, long, and elevation on a map later IF you have really good location notes. You will be required to submit a copy of your field notes with your collection. I shall be looking for completeness.
Field notes are notes taken in the field.
Later in life, your field notes could become a legal document. Think of them that way now. Pressing the specimens. Well made specimens can be both valuable scientific resources and visually attractive. Make achieving both goals your aim, but recognize that some species will frustrate you.