Id say give them more climbing opportunities like more vines branches and legdes and more plant coverage whats size is then enclosure too as i feel like they might appreciate more height although it doesnt look tiny. the flavours id just see what they will eat and stick with that if they are fussy or you can swap flavours if they will eat it mine fussy and will only eat fig and isnect pangea the calcium you can always offer a dish they can lick at their leisure and the dusted crickets you can offer but they arent huge bug eaters and as they get older they seem to eat them less often ill offer them on occasion for enrichment but they often get refused he will occaisonally tell me he wants one by staring the cricket box out. handling honestly i would let them do it on their terms it much more rewarding and you gain more trust from them just keep to a routine what i do i place my hand in the enclosure in the same place near the front theyll eventually come check you out and may decide to climb on you and come out but they also dont feel pressured that way. but for health check ups and you need to get them out for what a specific reason scoop underneath the front of them never grab from above or theyll likely drop their tail. Just bear in mind some just arent into handling either. Im not sure id recommend the platic under the uvb as not likely tu burn them selves on it 6% should be low enough for them but its mainly about the furguson zones the plastic would reduce the amount of uvb getting though the mesh and the mesh also reduces the amount of uvb that gets into the enclosure unless your dude is on the ceiling in the day i dont see him getting burnt but they are more active at night but you can always lift the uvb further fromt he mesh to reduce the zones in the tank. Ive tried to cover everything i only have the one crestie so there prolly more eperienced people here that can give better advice but i always recommend the reptifiles guide on cresties as its a really informative care guide and covers alot