Hi the greatest way to touch up directly with my design quality is having the design file itself and fortunately now i am shared a few vector designs sample of my works. Make sure you read the terms and conditions inside the 'read me' file.
Here is the link for the download :
1. Vector set of handdrawing style of motorcycle garage concept
2. Vector of Sugar Skull illustration color version
3. Vector of Sugar Skull illustration black and white version
4. Vector Set of vintage custom motorcycle