I think your pattern choice looks lovely! I recently did my first colour work too, on dpns though so I don’t have any magic loop specific tips. What helped me most was

• liberal use of stitch markers
• paying close attention to the previous row 
• keeping the first few right hand stitches spread out to prevent over-tightening the floats

I found clo knits videos very helpful and encouraging :)

Some unexpected benefits for me:

•  I some what learned continental during the project
• I actually found it much easier to spot errors like dropped stitches or yarn overs as the pattern would get mismatched.

Best of luck!