Is there a right consistency ?
Yours does sound a little thicker than I've had in the past though. Maybe you need to vary the ratio of ingredients a bit. But if it tastes nice, who cares ?
The ones we had recently in Cuba, from a traditional place and made completely from scratch, were so thick you could barely suck it up through the straw and had lumps of coconut in. They gave you a glass of this stuff, and a bottle of rum to add your own. Best ones I've ever had.
The ones we had in the hotels were very nice but nowhere near as thick or delicious.
Elina, try an English garden cocktail...2 parts gin, 2 parts apple juice, 2 parts lime cordial, 1 part elderflower cordial (or elderflower liqueur if you can find it). You can top it up with fizzy wine if you want but I prefer it as it is.
Geezer, I left it behind. .. Knowabit, I've never tasted a Mojito. .. ethandron, I never thought it would be so gloopy. Rocky .. I found the first sip a little sharp, then it grew on me.