Ahh great i didn't realise you had a rio180 mate, same as me..
this is where i wish i could use photo editing software... bear with me this is going to be tricky to describe..
Firstly great start. plants all look healthy which is the main thing. As far as a style is concerned i think you can create you own without having to follow too closely what you read / see elsewhere. mine for example i cannot pigeon hole into dutch or nature each layout is rather different and just comes as a result of hours of staring at the tank picturing what i could produce. then after a few more hours of fiddling with this and that the final layout is produced. please feel free to disagree but i cant think of any of my tanks that fit into either category... there are certain "rules" you have to follow in order for the individual plants to flow into one "scape" but apart from that i personally just test things out and decide on what looks right.
if i was let loose on your tank i would do the following, feel free to disregard at will, as i said what i think looks good may not be what you think looks good.
i would start by filling in the back. i don't like the look of glass / backing unless it's an iwagumi layout. I would plant two different varieties of tall plants on each side. probably 5 swords on the right taking up 1/3 of the tank length, planted about 2 or 3 inches apart (deep substrate). that will hide some of the spray bar (assuming you have moved it to the right pane.) which will in turn give the leaves some movement - always looks good. You dint want anything on that side that will grow across the surface and shade the stems in front. hence the choice of swords. i cant really tell but the stem plants (sorry no good with plant names 😳 ) at the back look like they will go red at the tips if so these will stand out better against the green background of the swords.
i would leave the centre 1/3 of the back unplanted.
for the left 1/3 i would use something like vallis to create a thick clump of plants.
the two clumps left and right will slowly grow together and bush out leaving only a small gap this will add depth to the look
Love the wood but one thing jumps out to me as wrong. the moss on the very front branch. it looks odd as it is in the centre of the wood rather than offset. from looking at the picture it needs to be on the right branch of the 3 vertical branches. is there anyway you can twist the piece so it will be on the right side more?
i would move one riccia stone to the front right, on the gravel to the immediate right of the dark piece of wood, under the small lily. or ideally make another one to go there.
maybe some anubias on the wood, both bits and let it grow out along the branches.
lol.. sorry off on a waffle there what lighting do you have by the way?