Fortnite Skin Makers: How to Get Started and Best Tools?

I'm really interested in creating custom skins for Fortnite and wanted to reach out to those who have experience in this area. I've got a few questions:

1. What software or tools do you recommend for beginners in Fortnite skin creation?

2. Are there any tutorials or resources that you found particularly helpful when starting out?

3. How difficult is it to get your custom skins noticed or potentially added to the game?

4. What are some common mistakes to avoid when designing Fortnite skins?

5. How long does it typically take to create a high-quality skin from concept to completion?

If anyone has insights or personal experiences to share, I'd really appreciate it! Thanks in advance for your help!