One of the best ways to get ideas is to ask someone else. Sometimes talking about it can spark another idea, or the person you're talking to may bring up a point you haven't thought of.

Here are some places you can find people to talk to: 

1. On this chapter. I'll try my best to help ;; 

2. On this thread: https://www.wattpadwriters.com/t/tips-on-finding-your-book-cover/19996/19 [external link ] 
This is where most of the community hangs out 

3. On discord: https://discordapp.com/invite/pUxq6TD [ link on my profile ] 
A lot of designers are on here. Most of them don't offer covers on the server, but they are very helpful and we do have a list of book shops you can check out