Making Yaki Udon with Shrimps can be straightforward if you follow these steps:

1. Cook the Noodles: If using fresh udon, simply separate and set aside. For frozen noodles, boil according to package instructions until tender. Drain and set aside.
2. Heat the Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat.
3. Sauté Aromatics: Add minced garlic and sliced onions to the pan. Sauté for 1-2 minutes until fragrant.
4. Cook the Shrimp: Add the shrimp to the pan. Cook for 2-3 minutes until they turn pink and opaque.
5. Add Vegetables: Incorporate bell peppers, broccoli, and carrots. Stir-fry for an additional 3-4 minutes until they are tender-crisp.
6. Mix in Noodles: Add the cooked udon noodles to the skillet. Gently toss everything together to combine.
7. Add Sauce: Pour in the soy sauce, oyster sauce (if using), and sesame oil. Toss well to coat everything evenly.
8. Season: Taste and adjust seasoning with salt and pepper as needed.
9. Serve: Remove from heat and serve immediately, garnished with chopped green onions and sesame seeds.

Following these steps will lead you to a plate of Yaki Udon with Shrimps, brimming with flavor and color!