It’s important to study job postings before you write a resume. Professional skills, technical skills, and language skills need to match what the employer is looking for to the best of your ability. However, don’t exaggerate your skills.
A smart employer will test candidates. If you list Excel on your resume, are you able to pass a test showing you can use that software? If say you have conversational skills in Spanish, could you carry on a conversation with a recruiter who speaks the language? I’m not recommending that you undersell your skills, but beware of overselling them. Be honest with potential employers – and yourself.