Can someone help and tell me if I need alterations done? and where to wear trousers

Hi I've got to go to my sisters graduation on wednesday and need to figure out if there is anything in the suit I'm wearing that needs alterations or if it's fine. Also where do I wear my trousers from, I've seen threads on this and I've tried searching around on the internet as well but I can't find a definite answer :l

Also I have a really goofy tie that I really wanna wear as well but I don't know how exactly it will look overall, I didnt take a pic of the tie but it's dark blue with massive black polka dots on it

Tie : (Basically this but the dots are black and the colour of the tie is a lot darker blue)


Ok This is what it looks like from the front and side:












Ok this is the height I'm contemplating wearing the trousers, so higher:










Or I could wear them lower:

I'm no expert but I think the pants could definitely be hemmed a couple of inches so you don't have that bunching at the foot, and maybe slimmed a bit or tapered. Also your next suit should have less shoulder construction for as skinny as you are, but there's not much a normal tailor can do about that on this suit. Overall I think you'll look fine!

Shoulders are too wide, collar looks to high. Should try one size down. Pants are way too long and need to be shortened. A lot.