Thanks guys for all your constructive critics. Let me this afternoon when i arrive home think about all and modify my design, i'm now working at the office.
When i proposed the panel, my idea was to keep all the original elements as possible, that's why i maintain the tabs, also, because with the MAIN ICON tab, you know you are in the creatures tab, workshop tab or what else but i must modify it to supress the black horizontal rectangles in some way to gain space for the creatures.
I will try to post a new panel today.