The design seems decent enough, so I'll give it a 4 I guess. For practicality though it gets a 0 since all splash screens are completely useless unless there's a long loading time or a register reminder - neither of which I'd expect a mIRC script to have. Sorry.
Spelling mistakes, grammatical errors, and stupid comments are intentional.
I agree with most of the sentiment here, as a work of art it looks good. mIRC scripts simply do not need this as a function though. My suggestion is this: spend the time applying the graphics to the correct part of mIRC - the tool/switchbars.