Make sure you get all the right CFI signatures. "A friend of mine" and his CFI got excited about the first solo cross-country and missed one of the two required signatures, which was not noticed until my friend showed up for his check ride and the DPE immediately pointed it out.
If you file a VFR flight plan, remember to give them updates on your ETA and set some kind of reminder to call and close it as soon as you land. My same friend as the previous story had a SAR phone call made to the FBO whose bathroom he was using when he got in a little later than planned and had not phoned in to close the flight plan yet.
When you are at cruising altitude, landmarks will probably look closer than they are. If you can't find the airport or landmark you are looking for, try looking right under your nose. That seems to especially be the case with lakes in my experience.
Go-arounds are free at every airport. Do not hesitate to go around if anything doesn't look right with your landing at any of the places you plan to land. And remember that plans are meant to be adjusted, so if you can't comfortably and safely land at one of the airports on your plan, carry on and fly home. You need the hours anyhow so you are not going to slow down your progress by having to fly the solo cross-country trip more than once, whereas you will slow down your progress if you bend an airplane trying too hard to get it down somewhere.
Have fun. The solo cross-country flight is the first time you transport yourself to another place as pilot in command. The magic carpet nature of what you are doing really starts to click around that time.