Big Top

I asked for help with my plus size top days ago at another forum, but no one replied. Can you help me?
Thanks!

Happy to help!
The key to dressing a larger top is visual breakage, sometimes called "color blocking." If you wear a solid unbroken, soft, light colored tee across your top, you'll be outlining and filling in the apple shape. It's better to create a faux torso effect by using illusion. You can try the column, which starts with a solid central column, and then is flanked by two sides of a different color. It's nice if the textures are different, too, with the crisper, more structured piece on the outer edges.
The Column
I also recommend keeping the side pieces (the outer shirt) darker than the central column (this is a good place for a dark jacket) but here's something that uses a vee, and works with the opposite color blocks, too:
Lane
I don't usually like plaid for the sides, either, but this one is small scale and in a light monochrome, so it does look good. Note how this outfit makes use of the vee, which creates two additional color blocks: the skin above the cami, and the shirt color in the vee.

Another way to add color breaks is by the correct use of a scarf. The scarf should be very crisp, and narrow, and create an additional two color blocks on each side of your top. No wide, filmy scarves. This one has vertical stripes in the design.

Ombre which creates a faux torso with horizontal color blocks here, is a great way to dye a shirt, too.

Remember some basic ideas: Black on the sides, to visually trim the expanse, vee neck in the center to cut the apple into slices and avoid the rounded neck of the scoop top, narrow scarves to create vertical lines, and crisp fabrics to create faux structure.