We often hear advice about what we should do when applying for jobs, to help guide our hunt for the perfect position. But here’s something that’s even more helpful when it comes to crafting the perfect application: advice on what not to do during your job hunt.

Recruiters and hiring managers all have their own personal preferences about little things that turn them off from candidates and applications. But when you look at some of the worst offenders, you’ll see many of them have pieces in common… and those are the biggies you want to avoid.

If you’re really keen about making a positive impression on recruiters, don’t do these things.

1. Forget to proofread

“A colleague of mine once said, ‘A resume represents the best this person can possibly be.’ This is so true,” says August Negele, recruiting and development coordinator for Homescout Realty, explaining that a resume “represents careful thought of what a job seeker wants an employer to know about them. There is limitless time to create, perfect, proofread, make changes, update, have consistent formatting, etc.”

A typo may be forgiven, but don’t ever expect an error-ridden resume to get moved to the right pile. “Even if a resume has one small error, I’ll give a pass,” Negele says. “If there is more than one, but the candidate is exceptional, we might still get to an interview. If there are more than three, auto-fail.”

2. Ignore instructions

Instructions are there for a reason, so if a company has provided them on their job ad or application page, follow them!

Want a surefire way to make potential employers doubt your ability to do the job right? Ignore basic instructions from the get-go.

3. Neglect your online presence

Luckily, it’s easy to check up on how your online and IRL selves match up. Simply Google yourself and see what is out there. If there are any negative items, there are things you can do to protect yourself. The first move would be to remove any red-flag photos, reference to illegal activities, inconsistencies between what is on your resume and what is online. When that is completed, it is paramount to check your privacy settings on each platform.

4. Spray and pray

Applying to multiple positions at the same company is a big no-no, says Adrian Granzella Larssen, editor-in-chief of The Muse.

“It’s fine to apply for more than one role if there are a few you’d be qualified for,” she says, “but it’s best to focus your search on just a couple and, again, tailor your application for each one. I’ve had people apply to every position I post, from the very junior to the very senior, and to me, that says, ‘I’ll take anything!’ Not exactly what most hiring managers want.”

5. Follow up excessively

While following up can be a good thing, Glen Loveland, HR manager for CCTV News, advises being careful with your timing, frequency and tone. “Virtually every recruiter is working with dozens of candidates at one time,” he says. “There’s a lot to prioritize … Apply, and if you don’t have any feedback for a week, you can follow up.”

What if you’ve gone through an interview and are waiting to hear back? Be patient — and avoid appearing desperate.

Send thank you emails after each interview and then wait. If you get another offer in the interim and are going to accept, inform the recruiter. Every recruiter on the planet wants to give their candidates a first-class experience, but we have limited resources. If you’re too aggressive or unpolished during the interview process, companies will think, ‘Wow, this person is going to be really high maintenance if we do hire them.