Step 1) Learn basic Latin, knowing that it is the oldest modern language comparison, it will greatly help with coming up with derivatives of words, endings for conjugations/declensions and such.
Step 2) Remember to use vowels! Don't try making words with hard pronunciation. I suggest using other languages accents to tell people to know what it should sound like, so you don't get ridiculously long words that have the letters sound it out.
I.e. Vootroaloopt -> Vötrålöpt (cavalry in my made up language)
Step 3) Have fun and get feedback and collaborate your work, as working alone is tedious and all you'll have is nouns verbs and adjective but no way to decline/conjugate them together.
