There's a lot that can be done with these images, but take a look at my profile and other portfolios for design examples. You can message me anytime with concerns if I can help you with your needs.
This type of custom images are necessary these days to make your site stand out, and to be social friendly. No one's going to Pin images from your blog if they are ugly or if you have none at all!
I never copy a design for a client, so you'll be getting something that's made just for you. I also am a big believer in NOT STEALING so all my stock images are CC0 or I purchased them myself.
I also offer blog writing, so check out my profile for my other gigs! xoxo