[Can I use auto refresher]

Don't do this!

[Account Profile change]

Yes, definitely you can change your Fiverr profile picture. Always Make sure to choose a Professional photo.

[increase impressions and clicks]

@komalafzal55 You can Share your gig on social media, personal websites, or relevant online communities to attract Potential buyers and External traffic. 
but always Be careful not to violate Fiverr's terms of service regarding external promotion. Good luck.

[Boost Fiverr account.]

This is not true.
There is no connection between your account boost or rank with the skill test. but Skill tests can only help to gain buyer trust who visit your profile.

[I'm new to the Fiverr forum community. Wanted to say hello to everyone!]

Welcome to the Fiverr community! 🥳
As a newbie (for all new members) in this professional community. give yourself proper time to learn about the Fiverr marketplace and the Forum.

Please before you post or ask any basic questions in this community, please don't forget to read previously discussed questions & and answers. Hopefully, you will find your answer easily before even asking.

Happy freelancing 🤜🤛

[newbie]

Fiverr is simple but not easy, That's why Before you start selling on Fiverr (Creating your first gig), you should read Fiverr TOS Carefully. Do research on your targeted niche (service you want to provide). Treat Fiverr as your own business and do more and more research. You will get the idea! Happy Freelancing

[Does Mutual Cancellation effect Orders Completed Rate?]

Yes, Mutual Cancellation affects the Orders Completed Rate by approximately 10% of each order