Arrivals are where you synthesize everything you have learned: radio discipline, phraseology, listening, procedures, and airmanship. Your first controlled arrival will be scrutinised by ATC, your instructor, and yourself. You will be nervous. That is normal and healthy.
Remember: ATC expects student pilots. They will not give you complex vectors or rush you. They want you to land safely. If you are unsure, ask. If your approach is unstable, go around. If you misunderstand an instruction, request clarification.
The more you practise, the more natural the radio work becomes. After your fifth or tenth arrival at the same aerodrome, you will find yourself relaxing. You will start to anticipate ATC's next instruction. You will join the circuit smoothly and land confidently.
Arrivals are a privilege and a responsibility. You are bringing a flying machine back to earth, in contact with professional controllers and sharing airspace with other pilots. Treat every arrival as an opportunity to demonstrate skill, precision, and professionalism.