First, I want to say that your selections look great. It's obvious that you've got a look you prefer and I suspect that your work environment probably dictates a lot of your choices in this matter. If you feel like you are presenting yourself in a way that makes you feel prepared for your day, you are doing a great job at it. Regarding putting together an outfit, a dark suit with a white or light blue shirt is pretty hard to mess up, so if you like that look, stick with it. I was delighted to see that light blue tie has a whimsical animal print, maybe dinosaurs? That's a perfect way to lighten up a suit. A current trend among men who need to keep the decorum of a dark suit is outrageously colored and patterned socks. If you wanted to add a surprise of color, try this out, but as a rule, I'm opposed to gimmicky touches for the sake of novelty. I don't assume clothes need to say anything as long as they are well matched and allow you to conduct business without drawing undue attention; they are doing their job so you can do yours.
I basically need help to modernize and update the clothes I have. I ideally would like to dress in a modern casual style, so could you give me some suggestions and examples that would fit for my body type? I wear a 36-38 waist, 34 length, shirts are typically XL or Double XL
I'm usually addressing someone who is having a problem dressing and getting a good fit, so it's nice just to talk about fashion in general. At 6'2" and 220, I don't know that I would consider you in the Big & Tall realm, but as an exercise, you might find a proper Big & Tall store and try on some pants and shirts to see if you like how "tall" clothes fit you compared to the clothes you find in regular stores. Clothes with a Tall designation are cut for people 6' and taller so you may discover that Tall pants, which have a longer rise fit you better and that Tall shirts, which tend to have longer sleeves, lower chest pockets, and longer shirt tails for tucking in, more suited to your body type. To your eye, the clothes may not look different but may fit you better when they are on you. Typically, Big & Tall stores will carry garments starting at Medium Tall, so you should find plenty of selection for your build. Be aware however that clothes from these type of stores tend to be more expensive. I do a lot of my shopping at discount stores like Burlington Coat Factory then fill in what I need from retail stores like JC Penneys, then, if I need something specific that I can't find at one of those two places, I head into a Big & Tall. This bottom-up approach saves me money, and I make sure the nice clothes I do have, I take care of by hanging them on hangers right and cleaning things according to the instructions.