No specific advice, just the usual stuff:
- Stereo recordings are preferable (X/Y, ORTF, M/S, small A/B). Mono will offer MIR less detail to work with.
- Signal sources should be centered in the stereo image.
- Avoid reverb, but don't think "bone-dry" - some air around the sound is absolutely fine.
- Try to avoid obvious close-mic artifacts (too much bass, too many finger-/breath-/bow-noises etc.). While they won't do any harm technically, they make it harder to create the impression of distance.
- Within MIR, don't stick to a visually "pretty" or seemingly "logical" stage setting, but trust your ears and make use of all the different reflection patterns offered by emanating sound into different directions, from different positions.
- EDIT: Don't use Instrument Profiles that were created for Vienna Instruments, but General Purpose Profiles, The former are much too specific for 3rd-party signal sources.
All the best,