Thank you! I really appreciate the compliment!
If you got some time to spare, I invite you to read this guide
It used to help me a lot when I started making designs:
A guide to adoptablesThere are many keys that makes a design successful, though I mostly suggest you to study the color wheel and which colors matches good together, and how to make nice markings
Studying anatomy is a huge help if you want to draw the adoptables yourself, either that or you can use many of the F2U bases you can find around deviantART
And also: a lot of practise
it took me quite some time to get there, I used to make shitty designs as well back in the days too. The internet is a huge pile of ressources that would definitely help you more than me ^^