Will senior year performance affect transfer application after freshman year college?

So my high school career has been really awful and I’m hoping to do really well in EC’s this year (12th grade). The sad part is that I got motivated to do all this halfway through junior year, and so it’s much too late for me now since all the competitions etc. are in second semester. By then I’d have already received acceptance letters…

So my question, could I put senior year achievements on my transfer application after freshman year college? I’m planning to do really well at UF freshman year and try and transfer to another college (like CMU or MIT. Yes, I know the chances are very very low)

Would those achievements have any effect on the application? Or do the colleges just see what you’ve done in your university so far?