My thought would be it's not your style that is the problem as Neone6 (Andrew has a real out of the box, as I call it sifi style that I can't get anything in my head to make something like that. with his WB you can read and see it all.
In the beginning some of your problem was making a incomplete WB. Users want a complete WB and one that is very usable. Take your Office Supplies WB. The text on the buttons, taps and taskbar clock for example are broken text or very hard to see text. Same with the clock text on your Light-tube 7 WB. So it's really not so much your style as the usability of the WB. Check out just these few points I mentioned and you will see more. correct that type of stuff first and work from there.
I understand it sounds like starting over but I wouls juggest what Doc said "Vampothika has done a series of tutorials on creating a Windowblind."
Make a skin what ever colors you wish from stratch using Kitty's sizes and instructions as you will learn how to line things up better from what you have been doing. You can do it and you have the desire butit's something you just can't jump into as you now realize. So enjoy it and when you are stuck ask specific questions and you will get the help. I'm only trying to give you advice and help as you asked for it.
The bottom line is your windowblinds aren't very usuable friendy and I feel this is your main problem. Colors and graphic style are up to the person making the WB.