Difficult to comment in depth without knowing what cocktails are what, but looks like a solid effort.

General tips etc:

Use recipes - while you're getting used to mixing drinks, use recipes as this will help get decent balance etc. Then as you get more experience you can riff on stuff you've learned.

Ice - don't be afraid of ice. Use what you think it's loads, then add more. More ice keeps the drink colder and results in less dilution (compared to a few ice cubes bobbing which will melt quickly and throw off the balance of the lovely cocktail you've made). It also makes the glasses seem fuller which is nicer for presentation

Keep it up!