you could try a contour brush and use a light bronzer powder along the sides of your nose to get it a slimmer shape.
Also, don't obsess too much. my best friend used to HATE her nose. As she's gotten older she has grown into more. She said she used to beg her mom for a nose job and she is so glad she never got it.
always learn to hide areas you don't like you could use a darker foundation and to emphasize the parts you like add a bit lighter foundation but make sure there's no line between the two shades, i mean you have to blend them really well so it looks natural