>>38714284Pockets on shirts tend to be of the same main pattern or plain colors or viceverse, since you also have the Haunter and Nidos it won't do it.
You can focus on specific Pokemon and make a folder of edits while slowly downgrading the ammount of mons and prints and doing variations to finally decide which one looks better.
Made one but it looks better on the hawaiian shirt ironically.
>>38710768This one is also good, the pocket as you can see is optional and for example doesn't go on the dress shirts because it's a completely different outfit build.
An attempt, but it can easily cut even more patterns. Horsea is not mandatory but might fit, buttons can be grey, white or blue.
The editor also has filters to help you, with the colors of patterns to help you matching, not sure it does recognize them well tho.